12mm-1.25 x 40mm Black Oxide Class 12.9 Steel Extra Fine Thread Knurled Head Hex Socket Cap ScrewsType: Knurled Screws
Finish: Black Oxide
Head Style: Knurled Socket (Hex)
Thread Size: 1.25mm (Extra Fine)
Hardness: Class 12.9
Type: Socket Cap Screw
Specifications: DIN 912
Box of 5.
A socket cap screw is a type of cap screw with a hexagonal recessed drive. A hex key is required to tighten or loosen a socket screw. Socket screws are commonly used in assemblies that do not provide sufficient clearance for a conventional wrench or socket.