GB/T 38575-2021: Spectacle frames - Screw threads

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Scope

This document specifies the classification and requirements of screw threads
used for spectacle frames, the length and tolerances of screws, the thread taps
and measuring instruments.
This document applies to small threads, ordinary threads and thread taps.
This document does not apply to self-tapping screws.

Basic Data

Standard ID	GB/T 38575-2021 (GB/T38575-2021)
Description (Translated English)	Spectacle frames - Screw threads
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	Y89
Word Count Estimation	10,148
Issuing agency(ies)	State Administration for Market Regulation, China National Standardization Administration