Value Collection 43131 M4x0.7 Flat Socket Cap Screw 12.9

Product Description

The VALUE COLLECTION 43131 is a metric flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. Built from 12.9 grade alloy steel with a black oxide finish, it delivers high tensile strength and moderate corrosion resistance in demanding assemblies. The 90-degree flat head seats flush into countersunk holes, and the 2.5 mm hex socket drive accepts a standard hex key for installation. With an M4x0.7 thread and 16 mm overall length, this screw is fully threaded from tip to head. Machinists, fabricators, and industrial maintenance technicians install this type of fastener in precision mechanical assemblies, fixtures, and equipment enclosures.

This flat socket cap screw is suited for metric fastening applications in machine building, tooling fixtures, electronics enclosures, and general industrial equipment where a low-profile flush-mount fastener is required. The 12.9 material grade makes it appropriate for high-stress joints that demand superior clamp load. Fully threaded construction ensures maximum thread engagement across the full 16 mm length, which is advantageous in thin-material or short-grip applications.

Key Features

• M4x0.7 metric thread per DIN 7991 fastener standard
• 12.9 alloy steel construction for high tensile and proof load strength
• 90-degree flat head profile for flush countersunk seating
• 2.5 mm hex socket drive compatible with standard metric hex keys
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Fully threaded along the entire 16 mm overall length

Compatibility

Designed as a metric flat socket cap screw conforming to DIN 7991, suitable for use in any application requiring an M4x0.7 countersunk hex socket fastener with a 90-degree flat head seating angle.

Installation Notes

Install using a calibrated 2.5 mm hex key or hex bit driver. Countersink the mating material to 90 degrees to ensure proper head seating before torquing. Always verify hole depth and thread engagement before final assembly. De-grease mating surfaces and inspect threads for damage prior to installation to maintain clamp load integrity.