CSK Socket Screw
(DIN 7991)
Material : C1022 , Hardened ( 4.8, 8.8 ,12.9 ) Stainless Steel(202,304)
Thickness : M4 – M12
Colour : Black
CSK Socket Screws
They have a rounded head and are also called button caps. Countersunk screws used to secure doors to frames, for instance. With traditional screws, the screw head will protrude out.
Size Chart
Measurements (mm)
Dia (d)
Length (l)
M4
All Sizes
M5
All Sizes
M6
All Sizes
M8
All Sizes
M10
All Sizes
M12
All Sizes
BSW
Dia (d)
Length (l)
3/16
All Sizes
1/4
All Sizes
5/16
All Sizes
3/8
All Sizes
1/2
All Sizes
5/8
All Sizes
3/4
All Sizes
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