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21.040.20 - Inch screw threads

ICS 21.040.20 Details

Inch screw threads

Zollgewinde (Witworthgewinde)

Filetages en pouces

Colski navoji

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Parent
21.040 - Screw threads

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Standardization Organization
Technical Committee
Directive
Mandate
50
ISO
ISO 68-2:2023(Main)
ISO general purpose screw threads — Basic and design profiles — Part 2: Inch screw threads

This document specifies the basic and design profiles for ISO inch screw threads (UN and UNR). UN applies to both internal and external threads. UNR only applies to external threads. A flat or rounded root contour, due to the threading process, is specified for UN threads, while only a defined rounded root contour is specified for UNR external threads. This document is applicable to the inch fastening screw threads.

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ISO
ISO 725:2009(Main)
ISO inch screw threads — Basic dimensions

ISO 725:2009 specifies the basic dimensions, in inches, of ISO inch screw threads in accordance with ISO 263. The values refer to the basic profile in accordance with ISO 68-2.

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SIST
SIST ISO 5864:1998(Main)
ISO inch screw threads -- Allowances and tolerances
ISO 5864:1993

Specifies a system of allowances and tolerances for standard thread series, covering the range of diameters from 0,06 in to 6 in, and pitches from 80 to 4 threads per inch.

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SIST
SIST ISO 263:1998(Main)
ISO inch screw threads -- General plan and selection for screws, bolts and nuts -- Diameter range 0.06 to 6 inch
ISO 263:1973

Tabulates inch threads having the basic profile for triangular threads specified in ISO 68; contains sizes in the diameter range between 0.06 to 6 inch, comprising a number of series of diameter/pitch combinations, together with a system of thread designations.

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ISO
ISO 5864:1993(Main)
ISO inch screw threads — Allowances and tolerances
SIST ISO 5864:1998

Specifies a system of allowances and tolerances for standard thread series, covering the range of diameters from 0,06 in to 6 in, and pitches from 80 to 4 threads per inch.

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ISO
ISO 263:1973(Main)
ISO inch screw threads — General plan and selection for screws, bolts and nuts — Diameter range 0,06 to 6 in
SIST ISO 263:1998

Tabulates inch threads having the basic profile for triangular threads specified in ISO 68; contains sizes in the diameter range between 0.06 to 6 inch, comprising a number of series of diameter/pitch combinations, together with a system of thread designations.

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SIST
SIST ISO 68-2:2002(Main)
ISO general-purpose screw threads -- Basic profile -- Part 2: Inch screw threads
ISO 68-2:1998

This part of ISO 68 specifies the basic profile for ISO inch screw threads.

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ISO
ISO 68-2:1998/Amd 1:2020(Amendment)
ISO general-purpose screw threads — Basic profile — Part 2: Inch screw threads — Amendment 1: The dimensions of basic profile
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SIST
SIST ISO 725:1997(Main)
ISO inch screw threads -- Basic dimensions
ISO 725:1978
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ISO
ISO 68-2:1998(Main)
ISO general purpose screw threads — Basic profile — Part 2: Inch screw threads
SIST ISO 68-2:2002

This part of ISO 68 specifies the basic profile for ISO inch screw threads.

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ISO
ISO 725:1978(Main)
ISO inch screw threads — Basic dimensions
SIST ISO 725:1997
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ISO
ISO 5864:1978(Main)
ISO inch screw threads — Allowances and tolerances
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