Metric Blue UST176311 Hex Socket Cap Screw M20x2.50

Product Description

The METRIC BLUE UST176311 is a hex socket cap screw engineered for high-strength fastening in demanding mechanical and industrial applications. This fully threaded fastener features an M20 x 2.50 thread profile with a 40 mm (approximately 1.57 inches) length under head. Constructed from alloy steel at material grade 12.9, it delivers high tensile and proof load capacity. The Metric Blue coating provides corrosion resistance and visual identification. The hex socket drive accepts a standard hex key or Allen driver. This screw is manufactured to DIN 912 and ISO 4762 standards, making it a reliable choice for precision assemblies where dimensional consistency matters.

This screw is suited for use in machinery, equipment fabrication, structural assemblies, and maintenance applications where a recessed-drive, high-strength metric fastener is required. The M20 grade 12.9 specification is commonly specified in heavy equipment, hydraulic manifolds, and industrial fixtures where clamping force and joint integrity are critical. Installers working in metric-standard environments will find this fastener meets dimensional requirements for both new builds and replacement work.

Key Features

• M20 x 2.50 thread size with 40 mm length under head (approximately 1.57 inches)
• Fully threaded along the shank length
• Alloy steel construction at material grade 12.9 for high tensile strength
• Metric Blue coating for corrosion resistance and grade identification
• Hex socket (Allen) drive type for recessed, torque-capable installation
• Conforms to DIN 912 and ISO 4762 fastener standards

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for any application requiring a fully threaded M20 x 2.50 hex socket cap screw to DIN 912 or ISO 4762 specifications.

Installation Notes

Installation is typically performed by machinists, millwrights, or mechanical contractors using a calibrated torque wrench and a correctly sized hex key. Grade 12.9 fasteners require precise torque application per the assembly specification to avoid over-stress or joint failure. Always verify thread engagement depth and mating thread condition before installation. Never reuse fasteners that show signs of galling, corrosion, or deformation.