Value Collection 42756 M8x1.25 Hex Socket Cap Screw 50pk

Product Description

The VALUE COLLECTION 42756 is a partially threaded hex socket cap screw in M8 x 1.25 metric thread, with a 50 mm length under head. Manufactured from alloy steel at material grade 12.9, this screw delivers high tensile strength suited to demanding mechanical and structural fastening applications. The black oxide finish provides moderate corrosion resistance and a consistent, low-reflectance appearance. Drive type is internal hex, requiring a standard hex key or Allen driver for installation. This fastener conforms to DIN 912 and ISO 898-1 standards. Sold in a pack of 50 units.

This screw is used across a broad range of industrial, mechanical, and fabrication applications where a strong, flush-seated fastener is required. Typical install scenarios include machinery assembly, equipment mounting, jig and fixture construction, and structural steel connections. The partial threading engages the full thread length into the mating material while the unthreaded shank provides shear strength across the joint. Installation is performed by machinists, millwrights, maintenance technicians, and general fabrication trades.

Key Features

• M8 x 1.25 metric thread with 50 mm length under head
• Grade 12.9 alloy steel construction for high tensile and proof load ratings
• Partially threaded shank provides shear resistance at the joint interface
• Black oxide coating for moderate corrosion resistance and reduced light reflection
• Internal hex drive for positive torque transfer with standard hex keys
• Conforms to DIN 912 and ISO 898-1 fastener standards
• Pack of 50 for service stock or production use

Compatibility

Designed for use in M8 x 1.25 threaded holes conforming to metric standards. Suitable for any application requiring a DIN 912 hex socket cap screw at grade 12.9 in M8 x 1.25 thread pitch with 50 mm underhood length.

Installation Notes

Installation requires a correctly sized metric hex key or Allen driver; do not use an undersized key as this can round the socket. Always verify the mating thread is clean and undamaged before driving. Torque to the appropriate value for grade 12.9 M8 fasteners per the applicable engineering specification or equipment manufacturer guidance. Black oxide fasteners are not intended as a sole corrosion barrier in wet or outdoor environments without additional protective treatment.