Value Collection 43140 Flat Socket Cap Screw M5x0.8 25mm

Product Description

The VALUE COLLECTION 43140 is a metric flat socket cap screw engineered for applications where a flush or countersunk fastener profile is required. Built from grade 12.9 alloy steel with a black oxide finish, this screw delivers high tensile strength and moderate corrosion resistance in a compact form factor. The 90-degree flat head seats fully into a countersunk hole, eliminating protrusion above the mating surface. Drive engagement is via a 3 mm hex socket. Thread size is M5x0.8 with an overall length of 25 mm and fully threaded shank. Installed by machinists, millwrights, and mechanical assembly technicians across a wide range of industrial and equipment applications.

This fastener is suited for precision assemblies, machine frames, fixtures, tooling plates, and equipment panels where a low-profile or flush surface is necessary. The black oxide finish reduces light reflection and provides mild surface protection in dry or lightly oiled environments. The fully threaded M5x0.8 shank makes it compatible with standard metric tapped holes and threaded inserts conforming to DIN 7991. Minimum order quantity is 25 pieces per order.

Key Features

• Grade 12.9 alloy steel construction for high tensile and proof load strength
• 90-degree flat head design seats flush in countersunk holes
• 3 mm hex socket drive for precision torque application with standard Allen keys or hex bit drivers
• Fully threaded M5x0.8 shank compatible with standard metric tapped holes
• Black oxide finish provides mild corrosion resistance and low-reflectance surface
• Conforms to DIN 7991 fastener standard

Compatibility

Designed for use in standard metric M5x0.8 tapped holes and countersunk bores conforming to DIN 7991 specifications, suitable for general industrial machinery, fixtures, and mechanical assemblies requiring a flush fastener profile.

Installation Notes

Installation is performed using a 3 mm hex key or hex bit driver rated for the torque demands of grade 12.9 fasteners. Ensure the mating countersink angle is machined to 90 degrees to achieve full head seating. Verify thread engagement depth meets applicable engineering standards before final torque. Do not substitute a lower-grade fastener in applications specified for grade 12.9.