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ISO 23887:2021

Aerospace — Blind fasteners, threaded type, self-locking — Test method for locking torque

Publication date:   Jul 21, 2021

General information

90.20   Standard under periodical review   Jul 15, 2026

ISO

ISO/TC 20/SC 4 Aerospace fastener systems

International Standard

49.030.99   Other fasteners

Buying

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Scope

This document describes the locking torque test method for blind fasteners, threaded type. This test method is used to measure the locking torque of blind fasteners with internal thread and external sleeve. It is applicable to blind fasteners consisting out of four elements (drive nut, nut, sleeve and corebolt) having a cross recess at the top of the nut.

Life cycle

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PUBLISHED
ISO 23887:2021
90.20 Standard under periodical review
Jul 15, 2026