BS 3172-1:1959

Screw threads for spectacle frames. Specification for screw threads of Unified form for spectacle frames including screwing taps and screw gauges.

NORMA vydaná dňa 30.9.1980

The information about the standard:

Designation standards: BS 3172-1:1959
Note: NEPLATNÁ
Publication date standards: 30.9.1980
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS