Value Collection 427387MSC Flange Bolt M8 X 1.25 80 Mm

Product Description

The VALUE COLLECTION 427387MSC is a metric smooth flange bolt designed for industrial and mechanical fastening applications. It features an M8 x 1.25 thread specification with an 80 mm length under head and a 30 mm threaded section, making it a partially threaded configuration. The bolt is manufactured from Grade 10.9 alloy steel, which delivers high tensile strength suited for demanding clamping loads. A phosphate and oil finish provides baseline corrosion resistance and reduces galling during installation. The integrated smooth flange, measuring 18 mm in diameter, distributes clamping load over a wider bearing surface without the need for a separate washer. This fastener is installed by machinists, maintenance technicians, and assembly professionals working in metric-standard environments.

This bolt is intended for use in metric fastening applications where a flanged bearing surface is required to distribute load or protect the mating material. The partially threaded shank provides a grip length for precise joint clamping and is well suited for through-bolt assemblies and structural connections in machinery, automotive, and general industrial fabrication. It conforms to DIN 6921 and DIN ISO 898-1 standards, making it appropriate for use wherever those specifications are called out in engineering documentation or maintenance procedures.

Key Features

• M8 x 1.25 metric thread with 30 mm thread length for partial threading configuration
• Grade 10.9 alloy steel construction for high tensile strength and fatigue resistance
• Smooth 18 mm flange diameter distributes clamping load, eliminating the need for a separate washer
• Phosphate and oil finish provides corrosion resistance and lubrication during installation
• Hex drive with 12.73 to 13 mm drive size for standard metric tooling
• Conforms to DIN 6921 and DIN ISO 898-1 standards

Compatibility

Designed as a DIN 6921 and DIN ISO 898-1 compliant metric flange bolt suitable for M8 x 1.25 threaded holes in machinery, automotive assemblies, and general industrial fabrication where a smooth flanged bearing surface is specified.

Installation Notes

Installation should be performed with a metric hex wrench or socket sized to the 12.73 to 13 mm drive. Verify that the mating thread is clean and undamaged before installation. Apply torque in accordance with Grade 10.9 specifications as defined in the applicable engineering standard or equipment service documentation — do not estimate torque without a reference value. Avoid mixing metric and inch-standard fasteners in the same joint.