Value Collection 42758 M8x1.25 Hex Socket Cap Screw 70mm

Product Description

The VALUE COLLECTION 42758 is a partially threaded hex socket cap screw in M8 x 1.25 metric thread, with a 70 mm length under head. Manufactured from alloy steel to material grade 12.9, it is finished with a black oxide coating that provides mild corrosion resistance and a uniform dark appearance. The internal hex drive accepts a standard hex key for high-torque installation in confined spaces. This fastener meets DIN 912 and ISO 898-1 standards, making it a recognized choice for mechanical assemblies, machinery, and structural applications across industrial and trade settings.

This cap screw is suited for general mechanical assembly, equipment fabrication, and maintenance applications where a high-strength metric fastener is required. The 12.9 material grade indicates high tensile strength, appropriate for load-bearing connections in steel-to-steel or steel-to-aluminum assemblies. Typical installers include millwrights, pipefitters, HVAC equipment assemblers, and maintenance mechanics working on commercial or industrial equipment. The black oxide finish is commonly specified where low-profile appearance or mild lubricity is desired alongside the hex socket drive configuration.

Key Features

• M8 x 1.25 metric thread with 70 mm length under head
• Partially threaded shank for shoulder-bearing and precise joint clamping
• Alloy steel construction, material grade 12.9 for high tensile strength
• Black oxide finish for mild corrosion resistance and uniform appearance
• Internal hex socket drive for high-torque installation in tight spaces
• Meets DIN 912 and ISO 898-1 fastener standards

Compatibility

Designed as a standard DIN 912 metric hex socket cap screw suitable for general mechanical assembly and equipment maintenance applications requiring an M8 x 1.25 grade 12.9 fastener.

Installation Notes

Installation is performed with a metric hex key or Allen-head driver sized for M8 socket cap screws. Power down and de-energize any associated equipment before disassembly or fastener replacement. Apply the correct torque per the equipment manufacturer's specification for grade 12.9 M8 hardware. Inspect mating threads for cleanliness and damage before installation to ensure full thread engagement.