Value Collection 43154 M8x1.25 Flat Socket Cap Screw 25 Pack

Product Description

The VALUE COLLECTION 43154 is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Built to DIN 7991, it features an M8x1.25 metric thread and a 5.00 mm hex socket drive. The screw is fully threaded along its 12.00 mm overall length and manufactured from grade 12.9 alloy steel, making it suitable for high-strength clamping applications. A black oxide finish provides mild corrosion resistance and reduces light reflection. This fastener is sold in a package quantity of 25 and is commonly installed by millwrights, machinists, and mechanical contractors in production and maintenance settings.

This screw is suited for metric fastening applications where the screw head must sit flush with or below the mating surface. The 90-degree flat head profile is appropriate for countersunk holes machined to DIN or ISO standards. Typical uses include machine frames, jigs, fixtures, tooling plates, and equipment panels where a low-profile head is required. The grade 12.9 material grade indicates a high-tensile alloy steel capable of bearing significant clamping loads, making it a standard choice in precision mechanical assemblies.

Key Features

• DIN 7991 fastener standard for metric countersunk hex socket applications
• Grade 12.9 alloy steel construction for high-tensile strength
• 90-degree flat head seats flush in standard countersunk holes
• 5.00 mm hex socket drive for Allen key or hex bit installation
• Fully threaded along entire 12.00 mm length for maximum thread engagement
• Black oxide finish for mild corrosion resistance and low-reflectance appearance

Compatibility

Designed as a DIN 7991 metric flat socket cap screw for use in countersunk holes sized for M8x1.25 thread form in metric fastening applications.

Installation Notes

Installation requires a 5.00 mm hex key or Allen socket bit. Countersunk mating holes should be machined to the appropriate DIN or ISO specification to ensure proper head seating. Torque to the value specified by the assembly or equipment manufacturer for grade 12.9 fasteners. De-energize and lock out equipment before servicing any mechanical assembly that requires fastener removal or replacement.