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ISO 9139:2026

Aerospace — Nuts, plain or slotted (castellated) — Procurement specification ISO 9139:2026

Publication date:   May 26, 2026

General information

60.60   Standard published   May 26, 2026

ISO

ISO/TC 20/SC 4 Aerospace fastener systems

International Standard

49.030.30   Nuts

Buying

Published

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Scope

This document specifies the required characteristics for metric plain or slotted (castellated) nuts, with MJ threads according to ISO 5855-2, for use in aerospace construction.
It is applicable to nuts as defined above, provided that reference is made to this document in the relevant definition document.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 9139:1998

NOW

PUBLISHED
ISO 9139:2026
60.60 Standard published
May 26, 2026




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