GB/T 70.1-2000
Hexagon socket head cap screws
ISO 7380-1997
Hexagon socket button head screws
ISO 21269-2004
Hexagon socket heads cap screws with fine pitch thread
ISO 21269-2004
Hexagon socket knurled heads cap screws with fine thread
JIS B1176-2006
Hexagon socket head cap screw with fine thread
JIS B1176-2006
Hexagon socket knurled heads cap screws with fine threads
JIS B1176-2014
Hexagon socket head cap screw with fine thread
JIS B1176-2014
Hexagon socket knurled head cap screws with fine thread
JIS B1176-2000
Hexagon socket heads cap screws with fine threads
JIS B1176-2000
Hexagon socket knurled heads cap screws with fine threads
CNS 4558-1981
Hexagon socket countersunk head screws
CNS 4557-1981
Hexagon socket head cap screws; shallow head with pilot recess for wrench key
GB/T 70.1-2000
Hexagon socket knurled head cap screws
GB/T 70.6-2020
Hexagon socket head cap screws--Fine pitch thread
GB/T 70.6-2020
Hexagon socket knurled head cap screws--Fine pitch thread