Value Collection D39170 Hex Head Cap Screw 3/4-10 Grade 8

Product Description

The VALUE COLLECTION D39170 is a fully threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Sized at 3/4-10 UNC thread with a 1-1/2 inch length under head, this fastener is manufactured from Grade 8 steel — the highest common strength grade for inch-series fasteners — and finished with a zinc yellow dichromate coating that provides corrosion resistance in demanding environments. It conforms to ASME B18.2.1, the standard governing dimensions and tolerances for inch hex bolts and screws. Tradespeople, maintenance technicians, and mechanical contractors rely on Grade 8 hardware where high tensile and proof loads are required.

This cap screw is suited for heavy-duty bolted joints in equipment frames, machinery mounts, structural brackets, and similar assemblies where standard Grade 5 hardware is insufficient. The fully threaded configuration allows engagement along the entire shank length, making it appropriate for through-bolt applications and shorter joint stacks. The zinc yellow dichromate finish offers moderate atmospheric corrosion protection, suitable for interior industrial and sheltered outdoor installations.

Key Features

• Grade 8 steel construction for high tensile strength and proof load capacity
• Fully threaded 3/4-10 UNC shank — 1-1/2 inches length under head
• Zinc yellow dichromate finish provides corrosion resistance
• Conforms to ASME B18.2.1 dimensional standards
• Hex drive head for use with standard wrenches and sockets

Compatibility

Designed as a standard inch-series hex head cap screw for use in any bolted joint requiring 3/4-10 UNC thread engagement and Grade 8 tensile strength ratings.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician familiar with fastener torque specifications for Grade 8 hardware. Always use a calibrated torque wrench and apply the appropriate torque value specified by the equipment manufacturer or applicable engineering standard for the joint being assembled. Inspect threads on both the fastener and the mating nut or tapped hole before installation. Do not use an impact driver to final-torque structural fasteners unless the equipment is specifically calibrated for that purpose.