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ISO/DIS 12257

Aerospace — Drives, internal, TORX® drive — Geometrical definition, gaging, technical and quality requirements

General information

40.20     Apr 13, 2026

ISO

ISO/TC 20/SC 4

International Standard

49.030.01  

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Scope

This document specifies basic dimensions, characteristics and engineering requirements for TORX® recesses in aerospace fasteners.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 12257:2008

NOW

PROJECT
ISO/DIS 12257
40.20 DIS ballot initiated: 12 weeks
Apr 13, 2026

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