Value Collection 643046PS M8x1.25x40mm Hex Cap Screw Grade 8.8

Product Description

The VALUE COLLECTION 643046PS is a metric hex head cap screw designed for general-purpose fastening applications in mechanical assemblies, fabrication, and equipment maintenance. This screw features a fully threaded shank in an M8 x 1.25 thread profile with a 40 mm length under the head, driven by a 13 mm hex head. Manufactured from Grade 8.8 steel with a bright uncoated finish, it meets DIN 933 and ISO 4017 dimensional standards. Grade 8.8 designates medium-high tensile strength, making this fastener suitable for structural and load-bearing connections where standard hardware-grade fasteners are not adequate.

This fastener is used across a wide range of trade and industrial applications including HVAC equipment assembly, pump and motor mounting, electrical panel fabrication, plumbing fixture attachment, and general mechanical maintenance. The M8 x 1.25 thread size and 40 mm shank length suit it for mid-thickness metal-to-metal connections. Technicians and millwrights working on metric-dimensioned equipment will encounter this specification frequently in European and Asian OEM machinery as well as modern domestic equipment built to metric standards.

Key Features

• Fully threaded shank provides maximum thread engagement across the entire fastener length
• Grade 8.8 steel construction delivers medium-high tensile strength for structural fastening
• DIN 933 and ISO 4017 compliant for use in metric-standard assemblies
• Bright uncoated finish suitable for indoor or protected-environment installations
• 13 mm hex drive accommodates standard metric wrenches and sockets

Compatibility

Designed as a metric hex head cap screw conforming to DIN 933 and ISO 4017 standards, suitable for use in any application requiring an M8 x 1.25 fully threaded fastener at 40 mm length under the head.

Installation Notes

Installation is performed by mechanical technicians, millwrights, or trade professionals using a 13 mm open-end wrench, combination wrench, or socket driver. Always confirm thread pitch and length requirements against the joint specification before installation. Do not mix metric and unified inch-series fasteners in the same assembly. Bright uncoated fasteners should not be used in exterior or high-moisture environments without additional corrosion protection.