Value Collection 43135 M5x0.8 Flat Socket Cap Screw 25-pack

Product Description

The VALUE COLLECTION 43135 is a metric flat socket cap screw engineered for high-stress fastening applications where a flush or countersunk 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 M5x0.8 thread size at 8 mm in length. The 90-degree flat head seats flush with the workpiece surface when installed in a properly countersunk hole. Drive is via a 3 mm hex socket key. Sold in a package of 25 pieces, this fastener is suited for precision mechanical assemblies, tooling fixtures, and equipment where surface-flush fastening is critical.

This screw is used in metric-threaded assemblies across industrial machinery, hydraulic components, enclosures, and mechanical fixtures. The fully threaded shank maximizes thread engagement across the full 8 mm length, making it well suited for thinner material applications. Machinists, maintenance technicians, and equipment fabricators working in metric environments will find this fastener appropriate for locations where a protruding head is not acceptable and high clamping force is needed.

Key Features

• Grade 12.9 alloy steel construction provides high tensile and proof load strength
• 90-degree flat head profile seats flush in countersunk holes
• Hex socket drive accepts a 3 mm hex key for controlled torque application
• Fully threaded shank along the full 8 mm length for maximum thread engagement
• Black oxide finish offers mild corrosion resistance and reduced light reflection
• Conforms to DIN 7991 fastener standard for consistent dimensional accuracy

Compatibility

Designed for use in metric-threaded M5x0.8 countersunk applications conforming to DIN 7991 dimensional specifications.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician using a calibrated 3 mm hex key or hex bit driver. Ensure the mating hole is properly countersunk to 90 degrees before installation to achieve correct head seating. De-energize or lock out any equipment before fastening components in live machinery. Grade 12.9 fasteners should not be substituted with lower-grade hardware in high-load or safety-critical joints.