This document specifies the dimensions of machine bridge reamers. It gives, for a series of diameter ranges, d1, from 6 mm to 50,8 mm, the values, in millimetres, for the following dimensions of these tools: — overall length, l3; — total cutting edge length, l2; — tapered cutting edge length, l1. Unless otherwise stated, these reamers are right-hand cutting.

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This International Standard specifies the dimensions of centre drills for centre holes without protecting
chamfers (Type A).
It covers only metric dimensions, which are regarded as the only recommended dimensions in the
future for this type of drill.
The flutes may be straight or spiral, depending on the manufacturer’s discretion.
Unless otherwise indicated, these drills will be right-hand cutting.
Recommended dimensions for Type A centre holes, which can be obtained by a rational use of the centre
drills listed in this International Standard, are given in Annex A.

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This International Standard specifies the dimensions of centre drills for centre holes with protecting
chamfer — Type B.
It covers only metric dimensions, regarded as the only recommended dimensions in the future for this
type of drills.
The flutes can be straight or spiral at the option of manufacturer.
Unless otherwise stated, these drills are right-hand cutting.
Annex A gives the recommended dimensions for the centre holes, Type B, which can be obtained by a
rational use of the centre drills listed in this International Standard.

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This International Standard specifies the dimensions of centre drills for centre holes with radius —
Type R.
It covers only metric dimensions, regarded as the only recommended dimensions in the future for this
type of drills.
The flutes can be straight or spiral at the option of manufacturer.
Unless otherwise stated, these drills are right-hand cutting.
Annex A gives the recommended dimensions for the centre holes, Type R, which can be obtained by a
rational use of the centre drills listed in this International Standard.

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ISO 5468:2017 specifies the dimensions, in millimetres, of rotary and rotary impact masonry drill bits with hardmetal tips, having diameters in the range of 4 mm to 25 mm inclusive and overall, and working lengths in the series short, long and extra-long. It does not apply to hammer drills.

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ISO 494:2017 specifies the dimensions of cylindrical shank twist drills having working lengths in the long series. The cylindrical shank jobber and stub series drills and Morse taper shank drills are given in ISO 235.

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ISO 2250:2017 specifies the dimensions of cylindrical shank socket reamers and taper shank socket reamers manufactured to produce self-holding taper sockets for self-holding taper shanks of the following designations, and which are in accordance with ISO 296: - metric tapers no. 4 and no. 6; - Morse tapers no. 0 to no. 6 inclusive. NOTE Unless otherwise stated, these reamers are right-hand cutting.

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ISO 235:2016 specifies the dimensions of the following three types of drills: a) parallel shank drills, stub series; b) parallel shank drills, jobber series; c) Morse taper shank drills. It comprises, for each type of drill mentioned above, three tables giving, respectively: a) the dimensions in millimetres; b) the dimension in inches; c) the corresponding lengths, in millimetres and in inches, set out as functions of diameter steps.

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ISO 2541:2016 specifies the dimensions of centre drills for centre holes with radius ? Type R. It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills. The flutes can be straight or spiral at the option of manufacturer. Unless otherwise stated, these drills are right-hand cutting. Annex A gives the recommended dimensions for the centre holes, Type R, which can be obtained by a rational use of the centre drills listed in this International Standard.

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ISO 3291:2016 specifies the dimensions of extra-long Morse taper shank drills in the range of 6 mm to 50 mm diameter with an overall length range of 200 mm to 630 mm.

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ISO 4205:2016 specifies the dimensions, in millimetres, and the tolerances of 90° countersinks with parallel shanks and solid pilots for general use.

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ISO 2540:2016 specifies the dimensions of centre drills for centre holes with protecting chamfer ? Type B. It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills. The flutes can be straight or spiral at the option of manufacturer. Unless otherwise stated, these drills are right-hand cutting. Annex A gives the recommended dimensions for the centre holes, Type B, which can be obtained by a rational use of the centre drills listed in this International Standard.

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ISO 7079:2016 specifies the dimensions of core drills with parallel shanks and with Morse taper shanks. It includes two tables for each of the above specified types, giving respectively - the dimensions for the preferred diameter (see Tables 1 and 2), and - the corresponding lengths defined in terms of diameter ranges (see Tables 3 and 4). The tables show only metric dimensions which are alone recommended in the future for this type of drill. Unless otherwise stated, these drills will be right-hand cutting drills.

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ISO 4206:2016 specifies the dimensions, in millimetres, and the tolerances of counterbores with parallel shanks and solid pilots for general use.

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ISO 3292:2016 specifies the dimensions of extra-long parallel shank twist drills in the range of 2 mm to 14 mm diameter with an overall length range of 125 mm to 400 mm.

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ISO 4204:2016 specifies the dimensions of 90° countersinks with Morse taper shanks and detachable pilots for general use.

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ISO 10998:2016 specifies the dimensions and technical specifications of spot drills of high-speed steel and hardmetal with a point angle of 90° or 120°.

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ISO 866:2016 specifies the dimensions of centre drills for centre holes without protecting chamfers (Type A). It covers only metric dimensions, which are regarded as the only recommended dimensions in the future for this type of drill. The flutes may be straight or spiral, depending on the manufacturer's discretion. Unless otherwise indicated, these drills will be right-hand cutting. Recommended dimensions for Type A centre holes, which can be obtained by a rational use of the centre drills listed in this International Standard, are given in Annex A.

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ISO 3293:2016 specifies the dimensions of Morse taper shank countersinks for angles 60°, 90° and 120° inclusive. It specifies dimensions in metric units only, these being regarded as the only recommended dimensions in the future, for countersinks with cutting diameters in the range 16 mm to 80 mm. The dimensions given apply only to tools made from high speed steel. However, if the method of production allows, the shanks may be manufactured from a suitable alternative material, such as a carbon steel. The Morse taper shanks are in accordance with ISO 296. Unless otherwise indicated, the countersinks will be right-hand cutting. Parallel shank countersinks are the subject of ISO 3294.

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ISO 3294:2016 specifies the dimensions of parallel shank countersinks for angles 60°, 90° and 120° inclusive. It specifies dimensions in metric units only, these being regarded as the only recommended dimensions in the future, for countersinks with cutting diameters in the range 8 mm to 25 mm. The dimensions apply only to tools made from high-speed steel. However, if the method of production allows, the shanks may be manufactured from a suitable alternative material, such as a carbon steel. Unless otherwise indicated, the countersinks will be right-hand cutting. Morse taper shank countersinks are the subject of ISO 3293.

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ISO 3466:2016 lays down the dimensions of machine taper pin reamers with parallel shanks. It covers only metric dimensions, which are the only recommended dimensions in the future for these types of reamers. The reamers have been designed to produce holes for taper pins manufactured to ISO 2339, in the range of 2 mm to 12 mm nominal diameter. Unless otherwise stated, these reamers will be right-hand cutting. The flutes may be straight or left-hand spiral at the option of the manufacturer. Hand taper pin reamers are dealt with in ISO 3465, and machine taper pin reamers with Morse taper shanks in ISO 3467.

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ISO 3467:2016 lays down the dimensions of machine taper pin reamers with Morse taper shanks. It covers only metric dimensions, which are the only recommended dimensions in the future for these types of reamers. The reamers have been designed to produce holes for taper pins manufactured to ISO 2339, in the range 5 mm to 50 mm nominal diameter. Unless otherwise stated, these reamers will be right-hand cutting. The flutes may be straight or left-hand spiral, at the option of the manufacturer. Hand taper pin reamers are dealt with in ISO 3465, and machine taper pin reamers with parallel shanks in ISO 3466.

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2014-04-02 - Enquiry editing allocated to cjespersen@cencenelec.eu

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ISO 236-2:2013 specifies the dimensions of long fluted machine reamers with Morse taper shanks.

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ISO 3438:2013 specifies the dimensions of subland twist drills with Morse taper shanks and cylindrical shanks for holes prior to tapping screw threads. The drills are designed to produce holes prior to tapping metric threads (coarse pitch series) over a selected range of: M8 to M30 for subland twist drills with Morse taper shanks; M3 to M14 for subland twist drills with cylindrical shanks. ISO 3438:2013 complements ISO 2306.

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This International Standard specifies the dimensions necessary for the interchangeability of cylindrical shanks with a parallel flat for drills with indexable inserts, which can be made of carbide and ceramic materials according to ISO 513 or HSS according ISO 11054.

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ISO 521:2011 specifies the dimensions of machine chucking reamers with cylindrical shanks and Morse taper shanks. It deals with the following types of reamer: machine chucking reamers with cylindrical shanks in the range from 1,32 mm to 20 mm diameter; machine chucking reamers with Morse taper shanks in the range from 5,30 mm to 50 mm diameter. For each type of reamer, ISO 521:2011 gives two tables, one showing preferred sizes with corresponding dimensions, and the other being a general table set out as functions of diameter steps. Provision is also made for tolerances on lengths, cutting diameters and the diameters of cylindrical shanks.

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Technical requirements for two-flute twist drills made of high speed steel with either cylindrical or Morse taper shanks. These requirements may also form the basis for the specification of special purpose twist drills as agreed between the buyer and supplier.

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This part of ISO 236 specifies the dimensions of hand reamers. It comprises three tables giving respectively the preferred sizes with corresponding dimensions in millimetres and in inches, the corresponding sizes, in millimetres and in inches, set out as functions of diameter steps. Provision is also made for tolerances on lengths, cutting diameters and the diameter of parallel shanks.

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Lays down only metric dimensions, which are the only recommended dimensions in the future for these types of reamers. The reamers habe been designed to produce holes for taper pins manufacured to ISO 2339 in the range 0,6 to 50 mm nominal diameter. Unless otherwise stated, these tools will be rigth-hand cutting. The flutes may be straight or spiral at the option of the manufacturer.

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Specifies the dimensions of shell drills for use on the corresponding arbors for shell reamers in accordance with ISO 2402. Supplements ISO 235-1. Covers only metric dimensions. Applies to shell drills with outside diameters above 23,6 mm up to and including 101,6 mm having taper bores large end diameters from 13 to 40 mm, and to shell drill slots.

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Specifies the sizes of these drills for ISO metric threads (tables 1 and 2). ISO inch threads (tables 3 and 4) and pipe threads (tables 5 and 6). Applies to screw threads of normal length of engagement, the drill diamter being approximately equal to the nominal diameter of the thread minus the pitch. The sizes (except for those sizes indicated by an asterisk) have been selected from ISO 235 and are to be used in the future.

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ISO 2238:2011 specifies the dimensions of machine bridge reamers. It gives, for a series of diameter ranges, d1, from 6 mm to 50,8 mm, the values, in millimetres, for the following dimensions of these tools: overall length, l3; total cutting edge length, l2; tapered cutting edge length, l1. Unless otherwise stated, these reamers are right-hand cutting.

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ISO 494:2009 specifies the dimensions of cylindrical shank twist drills, having working lengths in the long series.

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ISO 2250:2008 specifies the dimensions of cylindrical shank socket reamers and taper shank socket reamers manufactured to produce self-holding taper sockets for self-holding taper shanks of the following designations: metric tapers no. 4 and no. 6; Morse tapers no. 0 to no. 6 inclusive. The dimensional characteristics of these socket reamers are in accordance with ISO 296.

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ISO 5468:2006 specifies the dimensions, in millimetres, of rotary and rotary impact masonry drill bits with hardmetal tips, having diameters in the range 4 mm to 25 mm inclusive and overall and working lengths in the series short, long and extra-long. It does not apply to hammer drills.

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ISO 3439:2003 lays down the dimensions of subland twist drills with cylindrical shanks for holes prior to tapping screw threads. The drills have been designed to produce holes prior to tapping metric threads (coarse pitch series) over a selected range of M3 to M14. ISO 3439:2003 complements ISO 2306.

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ISO 3438:2003 lays down the dimensions of subland twist drills with Morse taper shanks for holes prior to tapping screw threads. The drills have been designed to produce holes prior to tapping metric threads (coarse pitch series) over a selected range of M8 to M30. ISO 3438:2003 complements ISO 2306.

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Gives the dimensions and a list of the preferred diameters of extra-long Morse taper shank twist drills in the range 6 mm to 50 mm with an overall length range of 200 mm to 630 mm.

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Gives the dimensions and a list of the preferred diameters of extra-long parallel shank twist drills in the range 2 mm to 14 mm with an overall length range of 125 mm to 400 mm.

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Specifies the dimensions, in millimetres, of drill bits having diameters in the range from 4 mm up to 25 mm and overall and working lengths in the series short, long and extra long.

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Specifies the dimensions and other technical parameters of spot drills of high-speed steel and hardmetal with point angle of 90° or 120°. Applies to diameters from 4 mm to 20 mm.

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