GB/T 48158-2026Aerospace-Nuts, reduced hexagonal,thin, with MJ threads - Dimensions (English PDF)

GB/T 48158-2026 is the English-translated version of 航空航天用MJ螺纹小六角薄螺母 尺寸.

This standard specifies the dimensions of reduced hexagonal thin nuts with MJ threads for aerospace use. MJ threads are a metric thread form with a rounded root, commonly associated with aerospace fasteners, and a dimensional standard of this kind lets designers and manufacturers rely on interchangeable parts. It adopts an international standard.

It is intended for aerospace fastener manufacturers, aircraft and spacecraft designers, procurement and supply chain staff, quality inspectors, and calibration or gauging laboratories. Maintenance organizations may also refer to it when identifying or ordering replacement hardware.

It is a recommended (GB/T) standard and is therefore voluntary unless a contract, drawing or other binding document calls it up. Readers should consult the full text for the dimensions themselves. It was issued on 28 August 2026 and takes effect on 1 December 2026.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

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