BS A 401-420:2015

Specification for screws, pan and 100° countersunk head, hexalobular drive recess (unified threads below 1 inch) in various materials.

STANDARD published on 31.10.2015

The information about the standard:

Designation standards: BS A 401-420:2015
Publication date standards: 31.10.2015
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: British technical standard
Category: Technical standards BS