Value Collection 43160 Flat Socket Cap Screw M8x1.25

Product Description

The VALUE COLLECTION 43160 is a flat socket cap screw designed for precision fastening applications where a flush or countersunk profile is required. Built to DIN 7991 standards, this screw features an M8x1.25 metric thread and a 12.9 alloy steel material grade, making it one of the strongest classifications available in metric fasteners. The black oxide finish provides mild corrosion resistance and reduces light reflection in finished assemblies. With a 5.00 mm hex socket drive and a 90-degree flat head, it is fully threaded along its 40 mm overall length. Machinists, millwrights, and mechanical assemblers use this fastener in tooling, fixtures, and precision machine components.

This screw is suited for metric fastening applications in both industrial and commercial settings where a countersunk, low-profile head is needed. The fully threaded shank maximizes thread engagement across the full 40 mm length, which is particularly useful in thin material stacks or when coupling with threaded inserts. Its 12.9 grade rating means it meets high tensile-strength requirements found in hydraulic manifolds, machine tool fixtures, CNC components, and structural brackets. The black oxide finish blends cleanly into darkened or finished metal assemblies without adding significant dimensional buildup.

Key Features

• DIN 7991 fastener standard ensures consistent dimensional compliance for metric assemblies
• 12.9 alloy steel material grade delivers high tensile and proof load strength
• 90-degree flat hex socket head provides a flush, countersunk seating surface
• 5.00 mm hex socket drive fits standard metric hex key sets
• Fully threaded 40 mm length maximizes thread engagement in the installed material
• Black oxide finish adds mild corrosion resistance and low-reflectivity appearance

Compatibility

Designed as a standard DIN 7991 metric flat socket cap screw in M8x1.25 thread pitch, compatible with any application requiring a countersunk hex drive fastener to that specification.

Installation Notes

Installation should be performed by a qualified mechanic or machinist using a calibrated metric hex key or socket driver of the correct 5.00 mm drive size. Ensure the mating threaded hole or insert is clean and free of debris before driving. Do not exceed the rated torque capacity for the 12.9 grade as specified in applicable fastener standards. When used in structural or load-bearing assemblies, verify that the base material and thread engagement depth meet design requirements before applying final torque.