Metric Blue UST176316 Socket Cap Screw M20 X 2.5 80mm

Product Description

The METRIC BLUE UST176316 is a partially threaded socket cap screw designed for high-strength bolted assemblies in industrial, manufacturing, and mechanical maintenance applications. It features an M20 x 2.5 thread size, an 80 mm length under head, and a hex socket drive for use with standard Allen keys or hex-bit tooling. Manufactured from alloy steel to material grade 12.9, it delivers high tensile strength suited to demanding clamping and fastening applications. The Metric Blue finish provides a degree of corrosion resistance while serving as a visual identifier for metric-dimensioned fasteners. Licensed tradespeople and maintenance mechanics typically specify this screw where high clamping load and dimensional accuracy are required.

This screw is appropriate for use in general industrial machinery, heavy equipment assembly, tooling fixtures, and structural mechanical connections requiring a high-grade metric fastener. The partial threading is suited to applications where a smooth shank is needed through a clearance hole before thread engagement begins in the receiving component. It conforms to DIN 912 and ISO 4762 fastener standards, making it a direct specification match for engineered assemblies that call out those standards.

Key Features

• M20 x 2.5 thread with 80 mm length under head for deep-reach bolting
• Partially threaded shank for precise shear-load and clearance-hole applications
• Grade 12.9 alloy steel construction for high tensile and proof-load capacity
• Hex socket drive accepts standard hex keys and power-tool hex bits
• Metric Blue finish for corrosion resistance and metric-series identification
• Conforms to DIN 912 and ISO 4762 fastener standards

Compatibility

Designed as a DIN 912 and ISO 4762 compliant replacement or specification-grade socket cap screw for any assembly requiring an M20 x 2.5 partially threaded hex socket screw at 80 mm length under head in grade 12.9 alloy steel.

Installation Notes

Installation is typically performed by qualified millwrights, machinists, or maintenance mechanics using a properly sized hex key or torque-controlled hex-bit driver. Always verify mating thread condition and thread class before installation. Apply appropriate thread lubricant or thread-locking compound as specified by the assembly drawing or equipment manufacturer. Do not exceed the rated proof load for grade 12.9 fasteners, and always consult the equipment OEM torque specification for the given joint design.