Value Collection HC1020090-025BX M20 Hex Cap Screw

Product Description

The VALUE COLLECTION HC1020090-025BX is a metric hex head cap screw built for demanding fastening applications. It features an M20 x 2.5 thread profile and an overall length under head of 90 mm, with partial threading along the shank. Manufactured from Grade 10.9 steel, this screw delivers high tensile strength suitable for structural and mechanical assemblies where load-bearing integrity is critical. A black oxide finish provides mild corrosion resistance and reduces light reflection on exposed hardware. Mechanical contractors, millwrights, fabricators, and industrial maintenance technicians are the primary installers of this fastener class.

This screw is suited for heavy-duty bolted connections in industrial machinery, structural steel fabrication, automotive fixtures, and general mechanical assemblies where metric fasteners are specified. The partially threaded shank allows for precise clamping of components without thread engagement through the full grip length, making it appropriate for applications requiring a smooth shank bearing surface. It conforms to DIN 931, the international standard for partially threaded metric hex bolts.

Key Features

• M20 x 2.5 metric thread for use in standard metric tapped holes and with matching metric nuts
• 90 mm length under head with partial threading per DIN 931 specification
• Grade 10.9 steel construction providing high tensile and proof load strength
• Black oxide finish for mild corrosion resistance and reduced surface glare
• 30 mm hex drive size compatible with standard metric wrenches and sockets

Compatibility

Designed as a DIN 931-compliant partially threaded metric hex cap screw for use in standard M20 x 2.5 threaded assemblies across industrial, structural, and mechanical applications.

Installation Notes

Installation should be performed by qualified mechanical or industrial trades personnel using calibrated torque equipment appropriate for Grade 10.9 fasteners. Confirm thread engagement depth and mating nut or tapped hole grade before assembly. Follow applicable industry standards and equipment manufacturer torque specifications when tensioning structural connections. Always inspect threads for damage or contamination before installation.