This document specifies the geometry of test specimens and the testing procedure for mechanized peel testing of single mechanical joints on single-lap test specimens up to a single sheet thickness of 4,5 mm. The term "sheet", as used in this document, includes extrusions and cast materials. The purpose of the mechanized peel tests is to determine the mechanical characteristics and the failure modes of the joints made with different joining methods. This document does not apply to civil engineering applications such as metal buildings and steel constructions which are covered by other application standards. NOTE For mechanized peel testing of resistance spot, seam and embossed projection welds, see ISO 14270

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This document specifies general rules and provides technical information on stainless steels and their properties, which are relevant when using other parts of the ISO 3506 series. It includes specifications for corrosion-resistant stainless steels and nickel alloys, which are suitable for the manufacture of fasteners. It applies to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) stainless steel grades and nickel alloys for fasteners, and is intended to be used together with the relevant parts of the ISO 3506 series. Common designations of stainless steels and nickel alloys used for fasteners are given in Annex A.

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This document specifies the mechanical and physical properties of nuts, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at the ambient temperature range of 10 °C to 35 °C. It specifies property classes in relation to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) steel grades for nuts. ISO 3506‑6 provides general rules and additional technical information on suitable stainless steels and their properties. Nuts conforming to the requirements of this document are evaluated at the ambient temperature specified in paragraph 1. It is possible that they do not retain the specified mechanical and physical properties at elevated and/or lower temperatures. NOTE 1 Fasteners conforming to the requirements of this document are used without restriction in applications ranging from ?20 °C to +150 °C; however, fasteners conforming to this document are also used for applications outside this range down to ?196 °C and up to +300 °C. For more details, see ISO 3506-6. Outside the temperature range of ?20 °C to +150 °C, it is the responsibility of the user to determine the appropriate choice for a given application, in consultation with an experienced fastener metallurgist and by taking into account e.g. stainless steel composition, duration of exposure at elevated or low temperature, the effect of the temperature on the fastener mechanical properties and clamped parts, and the corrosive service environment of the bolted joint. NOTE 2 ISO 3506‑5[1] is developed in order to assist in the selection of appropriate stainless steel grades and property classes intended for use at temperatures up to +800 °C. This document applies to nuts: — with ISO metric thread in accordance with ISO 68‑1, — with diameter/pitch combinations in accordance with ISO 261 and ISO 262, — with coarse pitch thread M5 to M39, and fine pitch thread M8×1 to M39×3, — with thread tolerances in accordance with ISO 965‑1 and ISO 965‑2, — with specified property classes, including proof load, — with different nut styles: thin nuts, regular nuts and high nuts, — with a minimum nut height m ≥ 0,45D, — with a minimum outside diameter or width across flats s ≥ 1,45D (see Annex A), — of any shape, and — able to mate with bolts, screws and studs with property classes in accordance with ISO 3506‑1. Stainless steel grades and property classes can be used for sizes outside the diameter limits of this document (i.e. for D D > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met. This document does not specify requirements for functional properties such as: — torque/clamp force properties, — prevailing torque properties, or — weldability. [1] Under preparation.

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This document specifies the mechanical and physical properties of bolts, screws and studs, with coarse pitch thread and fine pitch thread, made of corrosion-resistant stainless steels, when tested at the ambient temperature range of 10 °C to 35 °C. It specifies property classes in relation to austenitic, martensitic, ferritic and duplex (austenitic-ferritic) steel grades for fasteners. The term "fasteners" is used in this document when bolts, screws and studs are considered all together. ISO 3506‑6 provides general rules and additional technical information on suitable stainless steels and their properties. Fasteners conforming to the requirements of this document are evaluated at the ambient temperature specified in paragraph 1. It is possible that they do not retain the specified mechanical and physical properties at elevated and/or lower temperatures. NOTE 1 Fasteners conforming to the requirements of this document are used without restriction in applications ranging from ?20 °C to +150 °C; however, fasteners conforming to this document are also used for applications outside this range down to ?196 °C and up to +300 °C. For more details, see Annex A and ISO 3506‑6. Outside the temperature range of ?20 °C to +150 °C, it is the responsibility of the user to determine the appropriate choice for a given application in consultation with an experienced fastener metallurgist and by taking into account e.g. stainless steel composition, duration of exposure at elevated or low temperature, the effect of the temperature on the fasteners mechanical properties and clamped parts, and the corrosive service environment of the bolted joint. NOTE 2 ISO 3506‑5 is developed in order to assist in the selection of appropriate stainless steel grades and property classes intended for use at temperatures up to +800 °C. This document applies to bolts, screws and studs: — with ISO metric thread in accordance with ISO 68‑1, — with diameter/pitch combinations in accordance with ISO 261 and ISO 262, — with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3, — with thread tolerances in accordance with ISO 965‑1 and ISO 965‑2, — with specified property classes, and — of any shape. Stainless steel grades and property classes can be used for sizes outside the diameter limits of this document (i.e. for d d > 39 mm), provided that all applicable chemical, mechanical and physical requirements are met. Certain bolts, screws and studs might not fulfil the tensile or torsional requirements of this document because of the geometry of their head or unthreaded shank, thus resulting in reduced loadability (e.g. when shear area in the head is less than the stress area in the thread; see 8.2.2). This document does not apply to set screws and similar threaded fasteners not under tensile stress (see ISO 3506‑3). It does not specify requirements for functional properties such as: — torque/clamp force properties, — shear strength, — fatigue resistance, or — weldability.

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This document specifies the characteristics of hexagon socket countersunk head screws with reduced loadability due to head design, in steel and stainless steel, with metric coarse pitch threads M2 to M20, and with product grade A. NOTE 1 Other dimensional options are given in ISO 888, ISO 965-1 and ISO 4753. NOTE 2 The reduced loadability (related to the countersunk head dimensions in combination with penetration of the hexagon socket specified in this document) implies a limitation of ultimate tensile load; see Table 5. NOTE 3 Particular attention is needed to ensure alignment of the countersunk head with the bearing surface of the countersink in the assembly.

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This document specifies an inspection procedure to be used by the purchaser where no prior agreement exists. It also specifies a reference acceptance procedure for acceptance or rejection of an inspection lot, when no agreement can be reached between the purchaser and the supplier, or where conformance to specification is disputed. It applies to inspection lots of bolts, screws, studs, nuts, pins, washers, rivets and other related fasteners. This document applies to fasteners not intended for high volume machine assembly, special-purpose applications or specially engineered applications requiring more advanced in-process control and lot traceability. For in-process control or final inspection by the manufacture and sorting, see ISO 16426.

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This document specifies the characteristics of hexagon washer head drilling screws with tapping screw threads, made of steel, with thread sizes ST2,9 to ST6,3, and with product grade A.

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This document specifies the characteristics of hexagon washer head tapping screws, made of steel and stainless steel, with thread sizes ST2,2 to ST8, and with product grade A.

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This document presents the latest knowledge related to hydrogen embrittlement, translated into know-how in a manner that is complete yet simple, and directly applicable to steel fasteners.

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This document specifies requirements for electroplated coatings and coating systems on steel fasteners. The requirements related to dimensional properties also apply to fasteners made of copper or copper alloys. It also specifies requirements and gives recommendations to minimize the risk of hydrogen embrittlement; see 4.4 and Annex B. It mainly applies to zinc and zinc alloy coating systems (zinc, zinc-nickel, zinc-iron) and cadmium, primarily intended for corrosion protection and other functional properties: — with or without conversion coating; — with or without sealant; — with or without top coat; — with or without lubricant (integral lubricant and/or subsequently added lubricant). Specifications for other electroplated coatings and coating systems (tin, tin-zinc, copper-tin, copper-silver, copper, silver, copper-zinc, nickel, nickel-chromium, copper-nickel, copper-nickel-chromium) are included in this document only for dimensional requirements related to fasteners with ISO metric threads. This document applies to bolts, screws, studs and nuts with ISO metric thread, to fasteners with non-ISO metric thread, and to non-threaded fasteners such as washers, pins, clips and rivets. Information for design and assembly of coated fasteners is given in Annex A. This document does not specify requirements for properties such as weldability or paintability. NOTE Other International Standards specify differing electroplating processes. For electroplating of fasteners, the requirements of this document apply, unless otherwise agreed.

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This document specifies requirements for non-electrolytically applied zinc flake coating systems for steel fasteners. It is applicable to coatings: — with or without hexavalent chromium; — with or without top coat; — with or without lubricant (integral lubricant and/or subsequently added lubricant). It is applicable to bolts, screws, studs and nuts with ISO metric thread, to fasteners with non-ISO metric thread, and to non-threaded fasteners such as washers, pins, clips, etc. This document does not specify requirements for such fastener properties as weldability or paintability. It is not applicable to mechanically applied zinc coatings. NOTE Coatings in accordance with this document are especially used for high strength fasteners (≥ 1 000 MPa) to avoid risk of internal hydrogen embrittlement (IHE — see 4.4). Information for design and assembly of coated fasteners is given in Annex A.

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This document specifies mechanical and physical properties of flat washers, designed to be used in bolted joints in combination with bolts, screws, studs and nuts with a specified property class in accordance with ISO 898‑1 and ISO 898‑2. NOTE 1 These types of washers can also be used with other fasteners such as screws forming their own mating thread. Washers that conform to the requirements of this document are evaluated at an ambient temperature range of 10 °C to 35 °C. They might not retain the specified mechanical and physical properties at elevated temperatures and/or lower temperatures. NOTE 2 Washers conforming to the requirements of this document are used in applications ranging from −50 °C to +150 °C. Users are advised to consult an experienced fastener expert for temperatures outside this range and up to a maximum temperature of +300 °C when determining appropriate choices, or for critical applications. This document is applicable to the following flat captive and non-captive washers made of carbon steel or alloy steel, with thickness from 0,2 mm to 12 mm: — plain washers (with or without knurls, ribs or chamfers); — square washers; — square hole washers; — shaped plates. It does not specify requirements for the following properties: — corrosion resistance; — weldability.

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ISO 16228:2017 specifies the different types of fastener inspection documents issued by the fastener manufacturer or distributor and/or by the external authorized representative on specific request of the purchaser at the time of the order. - declaration of compliance (F2.1); - test reports (F2.2, F3.1 and F3.2). NOTE The term "certificate" is in common use, however for fastener inspection documents the terminology to be used is "test report". ISO 16228:2017 specifies requirements for the content of each fastener inspection document, in conjunction with the order, the relevant standards and/or specified requirements. ISO 16228:2017 is applicable to finished fasteners such as bolts, screws, studs, nuts, washers, pins, rivets, etc. made of steel, stainless steel, non-ferrous metal or non-metallic material. ISO 16228:2017 does not apply to special-purpose or specially engineered applications requiring other types of procedures (e.g. initial samples). Examples of inspection documents are given in Annex A. An example of a coding system identifying the sections in fastener inspection documents is given in Annex B.

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ISO 4759-3:2016 specifies tolerances for flat washers of product grades A, C and F with nominal diameters of 1 mm to 150 mm inclusive, designed to be used in bolted joints in combination with bolts, screws, studs and nuts. This part of ISO 4759 may be applied to non-flat washers however it does not include all the tolerances related to these washers. It applies to non-captive and captive washers, and to standard and non-standard washers. It does not apply to dynamic disc springs. Washers of product grades F and A are intended to be used with bolts, screws, studs and nuts of product grades A and B; washers of product grade C are intended to be used with bolts, screws, studs and nuts of product grade C. NOTE The product grade refers to a specific tolerance range related to dimensional and geometrical characteristics (product grade F for fine tolerances, product grade A for precise tolerances, product grade C for large tolerances). Annex A presents tolerances taken from ISO 286‑1 and ISO 286‑2.

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ISO 2320:2015 specifies the functional properties for prevailing torque steel nuts when tested at an ambient temperature range of +10 °C to +35 °C. It includes a combined test method to determine the prevailing torque properties and the torque/clamp force properties at the same time. It applies to prevailing torque all metal type nuts and prevailing torque non-metallic insert type nuts: - with triangular ISO thread in accordance with ISO 68‑1; - with diameter/pitch combination in accordance with ISO 261 and ISO 262; - with coarse pitch thread M5 to M39 or with fine pitch thread M8 × 1 to M39 × 3; - with thread tolerances in accordance with ISO 965-2; - with mechanical properties in accordance with ISO 898‑2; Prevailing torque values specified in this standard are based on laboratory test conditions. NOTE 1 Actual prevailing torques in practical application can vary. NOTE 2 All metal type nuts conforming to the requirements of this International Standard are used in applications ranging from −50 °C to +150 °C. NOTE 3 Non-metallic insert type nuts conforming to the requirements of this International Standard are used in applications ranging from −50 °C to +120 °C. WARNING ? Temperatures outside the ambient temperature range can influence the functional properties (torque/clamp force and prevailing torque properties), see Annex A.

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ISO 16237:2015 specifies the geometry of the test specimens and the method for the cross-tension testing of single mechanical joints on single-lap test specimens up to a single sheet thickness of 4,5 mm. The term "sheet", as used in this International Standard, includes extrusions and cast materials. The purpose of the cross-tension test is to determine the mechanical characteristics and the failure types of the joints made with different joining methods. ISO 16237:2015 does not apply to civil engineering applications such as metal building and steel construction which are covered by other applicable standards.

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ISO 10664:2014 specifies the shape and basic dimensions of the hexalobular internal driving feature for bolts and screws, including the gauging method. The curvature of the contour of the hexalobular internal driving feature is defined and additional information which can be used when drawing the contour given. The intent is to provide the details necessary for inspection of the hexalobular driving feature. ISO 10664:2014 is not suitable for, nor intended to be used as, a manufacturing standard.

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ISO 4017:2014 specifies the characteristics of hexagon head screws with threads from M1,6 up to and including M64, of product grade A for threads M1,6 to M24 and nominal lengths up to and including 10d or 150 mm, whichever is the shorter, and product grade B for threads over M24 or nominal lengths over 10d or 150 mm, whichever is the shorter.

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ISO 21670:2014 specifies characteristics for hexagon weld nuts with flange, with sizes M5 to M16 (coarse thread) or d = 8 mm to 16 mm (fine pitch thread), of product grade A. Weld nuts conforming to ISO 21670:2014 are suitable for use with bolts of property classes up to 10.9 according to ISO 898‑1.

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ISO 14582:2013 specifies hexalobular socket countersunk head bolts and screws with high head (full loadability), of product grade A, and thread diameters from M3 up to and including M10 and property classes 4.8, 8.8 and 10.9.

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ISO 14581:2013 specifies the characteristics of hexalobular socket countersunk flat head screws in product grade A and with threads from M2 to M10 inclusive and with reduced loadability (according to Table 3).

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ISO 898-1:2013 specifies mechanical and physical properties of bolts, screws and studs made of carbon steel and alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners (the term used when bolts, screws and studs are considered all together) that conform to the requirements of ISO 898-1:2013 are evaluated at that ambient temperature range. They might not retain the specified mechanical and physical properties at elevated temperatures (see Annex B) and/or lower temperatures. Certain bolts and screws might not fulfil the tensile or torsional requirements of ISO 898-1:2013 because the geometry of their heads reduces the shear area in the head compared to the stress area in the thread. These include bolts and screws having a low or countersunk head. ISO 898-1:2013 is applicable to bolts, screws and studs made of carbon steel or alloy steel, having triangular ISO metric screw thread in accordance with ISO 68-1, with coarse pitch thread M1,6 to M39, and fine pitch thread M8×1 to M39×3, with diameter/pitch combinations in accordance with ISO 261 and ISO 262, and having thread tolerances in accordance with ISO 965-1, ISO 965-2 and ISO 965-4. It is not applicable to set screws and similar threaded fasteners not under tensile stress (see ISO 898-5). It does not specify requirements for such properties as weldability, corrosion resistance resistance to shear stress, torque/clamp force performance (for test method, see ISO 16047), or fatigue resistance.

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ISO 10513:2012 specifies the characteristics of prevailing torque type all-metal hexagon high nuts with metric fine pitch thread with nominal thread diameters, D, from 8 mm up to and including 36 mm, in product grade A for diameter sizes up to and including 16 mm and product grade B for diameter sizes above 16 mm, and with property classes 8, 10 and 12.

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ISO 10512:2012 specifies the characteristics of prevailing torque type hexagon regular nuts (with non-metallic insert) with metric fine pitch thread with nominal thread diameters, D, from 8 mm up to and including 36 mm, in product grade A for diamter sizes up to and including 16 mm and product grade B for diameter sizes above 16 mm, and with property classes 6, 8 and 10.

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ISO 8675:2012 specifies the characteristics of chamfered hexagon thin nuts (style 0), with metric fine pitch thread, with nominal thread diameters from 8 mm up to and including 64 mm, with product grade A for sizes D ≤ 16 mm and product grade B for sizes D > 16 mm.

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ISO 7040:2012 specifies the characteristics of prevailing torque type hexagon regular nuts (with non-metallic insert) with threads from M3 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 5, 8 and 10.

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ISO 7719:2012 specifies the characteristics of prevailing torque type all-metal hexagon regular nuts with threads from M5 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 5, 8 and 10.

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ISO 7042:2012 specifies the characteristics of prevailing torque type all-metal hexagon high nuts with threads from M5 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 5, 8, 10 and 12.

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ISO 10511:2012 specifies the characteristics of prevailing torque type hexagon thin nuts (with non-metallic insert) with thread from M3 up to and including M36, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 04 and 05.

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ISO 8674:2012 specifies the characteristics of hexagon high nuts (style 2) with metric fine pitch thread, with nominal thread diameters from 8 mm up to and including 36 mm, with product grade A for sizes D ≤ 16 mm and product grade B for sizes D > 16 mm. Coarse thread hexagon nuts, style 2, according to ISO 4033 are intended to be the first choice.

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ISO 4035:2012 specifies the characteristics of chamfered hexagon thin nuts (style 0), with threads from M1,6 up to and including M64, with product grade A for threads of diameter less than or equal to M16 and product grade B for threads of diameter greater than M16.

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ISO 8673:2012 specifies the geometry of hexagon nuts with nominal thread diameter from 8 mm up to and including 64 mm and the mechanical properties of hexagon regular nuts (style 1) with metric fine pitch thread in product grade A for nominal thread diameters 8 mm less than or equal to D less than or equal to 16 mm and in product grade B for nominal diameters 16 mm less than D less than or equal to 39 mm.

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ISO 4032:2012 specifies the characteristics of hexagon regular nuts (style 1), with threads from M1,6 up to and including M64, with product grade A for threads of diameter less than or equal to M16 and product grade B for threads of diameter greater than M16.

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ISO 4033:2012 specifies the characteristics of hexagon high nuts (style 2), with threads from M5 up to and including M36, with product grade A for threads of diameter less than or equal to M16 and product grade B for threads of diameter greater than M16.

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ISO 4034:2012 specifies the characteristics of hexagon regular nuts (style 1) with threads from M5 up to and including M64 and product grade C.

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ISO 7044:2012 specifies the characteristics of prevailing torque type all-metal hexagon nuts with flange (style 2) and threads M5 to M20 inclusive, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 8, 9, 10 and 12.

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ISO 4161:2012 specifies the characteristics of hexagon nuts with flange (style 2), with metric coarse threads from M5 to M20 inclusive, of product grade A for threads up to and including M16 and product grade B for threads above M16.

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ISO 10663:2012 specifies the characteristics of hexagon nuts with flange (style 2), and metric fine pitch thread with nominal thread diameters, D, from 8 mm to 20 mm, in product grade A for D less than or equal to 16 mm and product grade B for D greater than 16 mm.

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ISO 7043:2012 specifies the characteristics of prevailing torque type hexagon nuts with flange (with non-metallic insert), of style 2, with threads from M5 to M20 inclusive, in product grade A for threads up to and including M16 and product grade B for threads above M16, and with property classes 8, 9 and 10.

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ISO 12125:2012 specifies the characteristics of prevailing torque type all metal hexagon nuts with flange (with non-metallic insert) of style 2, with metric fine pitch thread with nominal thread diameters from 8 mm up to and including 20 mm, in product grade A for diameter sizes less than or equal to 16 mm and product grade B for diameter sizes greater than 16 mm, and with property classes 6, 8 and 10.

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ISO 12126:2012 specifies the characteristics of prevailing torque type all metal hexagon nuts with flange (style 2), and metric fine pitch thread with nominal thread diameters from 8 mm up to and including 20 mm, in product grade A for diameter sizes less than or equal to 16 mm and product grade B for diameter sizes greater than 16 mm, and with property classes 6, 8 and 10.

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ISO 15072:2012 specifies the characteristics of hexagon bolts with flange with metric fine pitch thread, small series, with product grade A, and with nominal thread diameters from 8 mm up to and including 16 mm and property classes 8.8, 9.8, 10.9, 12.9 or 12.9 (underlined) and A2‑70.

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ISO 4162:2012 specifies the characteristics of hexagon bolts with flanges, small series, of product grade A (except the driving feature which is according to product grade B), with threads from M5 up to and including M16, and property classes 8.8 to 10.9 and A2‑70. If, in special cases, specifications other than those listed in ISO 4162:2012 are required, they can be selected from existing International Standards, for example ISO 261, ISO 888, ISO 898‑1, ISO 965‑2 and ISO 3506-1.

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ISO 7720:2012 specifies the characteristics of prevailing torque type all-metal hexagon nuts, of style 2, with threads from M5 up to and including M36, in product grade A for threads up to and including M16, and product grade B for threads over M16, and with property class 9.

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ISO 898-5:2012 specifies mechanical and physical properties of set screws and similar threaded fasteners made of carbon steel or alloy steel when tested at an ambient temperature range of 10 °C to 35 °C. Fasteners (the term used when set screws and similar threaded fasteners are considered all together) which conform to the requirements of ISO 898-5:2012 are evaluated at that ambient temperature range. Fasteners according to ISO 898-5:2012 are classified to specified hardness classes and are intended for use under compressive stress only. ISO 898-5:2012 is applicable to set screws and similar fasteners: made of carbon steel or alloy steel, having a triangular ISO metric screw thread according to ISO 68-1, with a coarse pitch thread M1,6 to M30, and fine pitch thread M8×1 to M30×2, with diameter/pitch combinations according to ISO 261 and ISO 262, and having thread tolerances according to ISO 965-1 and ISO 965-2.

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This International Standard specifies hexagon flange head tapping screws with threads from ST2,2 up to and
including ST9,5.

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ISO 7041:2012 specifies the characteristics of prevailing torque type hexagon nuts (with non-metallic insert), style 2, with threads from M5 up to and including M36, in product grade A for threads up to and including M16, and product grade B for threads above M16, and with property classes 9 and 12.

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