Standard
[CURRENT]
BS A 401-420:2015-10-31
Specification for screws, pan and 100° countersunk head, hexalobular drive recess (unified threads below 1/4 inch) in various materials
- Publication date
-
2015-10-31
- Original language
-
English
- Pages
- 36
- Publication date
-
2015-10-31
- Original language
-
English
- Pages
- 36
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