GB/T 6561-2014
Cross recessed countersunk head thread rolling screws-type H
DIN 7500M-2000
Shallow countersunk flat head rolling screws-type H
DIN 7500M-2000
Deep countersunk flat head rolling screws-type H
UNI 8113
Countersunk flat head rolling screws-type H
Q 263-1999
Cross recessed countersunk head thread forming screws
GB/T 6561-1986
Cross recessed countersunk head thread forming screws-type H
Q 263-2012
Cross recessed countersunk head thread forming screws
DIN 7500-2007
Shallow countersunk flat head rolling screws-type H
DIN 7500-2007
Deep countersunk flat head rolling screws-type H
DIN 7500-2009
Shallow countersunk flat head rolling screws-type H
DIN 7500-2009
Deep countersunk flat head rolling screws-type H