Value Collection 427267MSC M8x1.25 Flange Bolt 20mm Grade 10.9

Product Description

The VALUE COLLECTION 427267MSC is a smooth flange bolt designed for metric fastening applications requiring a large-diameter bearing surface without a separate washer. The integrated flange distributes clamping load across an 18 mm flange diameter, reducing the risk of surface damage and loosening under vibration. The M8 x 1.25 thread with a 20 mm length under head is fully threaded, making it suitable for through-hole and shorter joint stack applications. Manufactured from Grade 10.9 alloy steel with a phosphate and oil finish, the bolt delivers high tensile strength and corrosion inhibition in a compact form factor. Installation uses a 12.73 to 13.00 mm hex drive.

This bolt is used across a wide range of industrial, mechanical, and trade assembly applications where metric fasteners are specified. Typical scenarios include machine frames, brackets, equipment enclosures, HVAC structural components, electrical panel mounting, and general fabrication work. The smooth flange face is suited to softer or painted substrates where a serrated flange could cause surface damage. Compliance with DIN 6921 and DIN ISO 898-1 makes it appropriate for applications requiring traceable fastener standards.

Key Features

• M8 x 1.25 metric thread, fully threaded over the 20 mm length under head
• 18 mm smooth flange diameter provides integrated load-spreading bearing surface
• Grade 10.9 alloy steel construction for high tensile strength
• Phosphate and oil finish for corrosion inhibition
• Hex drive (12.73 to 13.00 mm) compatible with standard metric tooling
• Conforms to DIN 6921 and DIN ISO 898-1 standards

Compatibility

Designed as an OEM-style metric replacement or general-use flange bolt for any application specifying an M8 x 1.25 fully threaded smooth flange bolt per DIN 6921.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson familiar with metric fastener torque requirements for Grade 10.9 hardware per the applicable equipment service manual or engineering specification. Always verify thread engagement depth and ensure mating threads are clean and undamaged before installation. Do not mix metric and imperial tooling on the hex drive to avoid rounding the fastener head. Consult the relevant equipment or structural specification for torque values, as none are provided with this fastener.