Metric Blue UST178029 Socket Cap Screw M8 X 1.25

Product Description

The METRIC BLUE UST178029 is a metric socket cap screw designed for high-strength fastening applications in precision mechanical assemblies. It features an M8 x 1.25 thread and a 60 mm length under head with partial threading, providing reliable clamping force in ferrous and non-ferrous substrates. The cap head is driven by a hex socket, requiring a standard hex key or Allen driver. Manufactured from grade 12.9 alloy steel and finished in Metric Blue, this screw is engineered for demanding industrial, tooling, and machine-building environments where tensile strength and corrosion resistance are priorities. Licensed tradespeople and maintenance technicians working to DIN 912 or ISO 4762 specifications will find this fastener a direct-fit solution.

This socket cap screw is suited for use in machine tool frames, jigs and fixtures, hydraulic manifolds, and structural mechanical assemblies where a recessed-head profile and high clamping torque are required. The M8 thread size and 60 mm shank length make it appropriate for applications with moderate material stack-up. Minimum order quantity is 10 pieces, sold individually per package. The Metric Blue finish provides a visual indicator of metric sizing to help differentiate hardware on the job site or in the shop.

Key Features

• Grade 12.9 alloy steel construction delivers high tensile and proof-load strength
• Partial threading along the shank supports precise shoulder-fit installations
• Hex socket drive accepts standard Allen keys and hex bit drivers
• Metric Blue finish aids quick visual identification of metric fasteners
• Conforms to DIN 912 and ISO 4762 fastener standards
• M8 x 1.25 thread profile compatible with standard metric tapped holes and nuts

Compatibility

Designed as a standard DIN 912 and ISO 4762 metric socket cap screw for use in any M8 x 1.25 tapped bore requiring a grade 12.9 fastener with a 60 mm length under head.

Installation Notes

Installation is performed by machinists, millwrights, and mechanical technicians using a calibrated torque wrench with an appropriate hex socket bit. Always verify that the mating threaded hole meets the required thread engagement depth for grade 12.9 fasteners before installation. De-energize and lock out all equipment per applicable safety procedures before accessing fastener locations on powered machinery. Do not substitute lower-grade fasteners in applications specified for grade 12.9 hardware.