DIN 34805-1 - DRAFT
DIN 34805-1 - DRAFT Draft Document - Button head screws - Part 1: Driving feature hexalobular socket
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2017
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 09/01/2017