BS 3172(1995) : 1995 AMD 9448
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
SPECIFICATION FOR SCREW THREADS FOR SPECTACLE FRAMES
06-15-1997
11-23-2012
Specifies requirements for screw threads for use with spectacle frames. Coverage includes: screw threads, screwing taps, gauges, and definitions and tolerances on length of screws. AMD 9448 RENUMBERS THIS STANDARD
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