ISO 12257:2008

Aerospace — Internal six-lobe drives — Metric series

Publication date:   Jul 21, 2008

General information

90.60 Close of review   Dec 3, 2024

ISO

ISO/TC 20/SC 4 Aerospace fastener systems

International Standard

49.030.20   Bolts, screws, studs

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Scope

ISO 12257:2008 specifies the dimensions of metric internal six-lobe drives used in metric screws in nominal thread diameter range 3 mm to 20 mm.

Life cycle

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PUBLISHED
ISO 12257:2008
90.60 Close of review
Dec 3, 2024