Hex socket head cap screw(GOSHO(Gosei(Coarse Steel Unplated 12 X 60 Pitch 1.75

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This is a bolt with a cylindrical head featuring a hexagonal socket.
Tightening is performed using a hex key (Allen wrench). Although classified as a bolt, it is in most cases used without a nut.
It is also referred to as a cap screw or socket screw.
Spanners and wrenches with jaws for tightening hex bolts require clearance space around the work area, whereas a hex key requires no such space.
For this reason, the use of hex socket head cap screws allows work in confined spaces and enables more compact machine designs.
Due to their appearance, they are also increasingly being used for decorative purposes.

• Hex socket head cap screw GOOSHO Gosei Coarse pitch
• Nominal diameter M12
• Length under head (ℓ) 60.0
• Pitch 1.75
• Thread length (b) Reference 36
• Head diameter (dk) Max 18.27 Min 17.73
• Neck diameter (da) Max 13.7
• Body diameter (ds) Max 12 Min 11.73
• Head height (k) Max 12 Min 11.57
• Neck fillet (r) Min 0.6
• Hex socket width across flats (s) Nominal 10 Max 10.175 Min 10.025
• Hex socket depth (t) Min 6
• Head chamfer (v) Max 1.2
• Full thread range 50
• Strength class 12.9(M2-M20) 10.9(M22-M24) 10.9(Electro zinc plating)