Value Collection D30170-3 Hex Head Cap Screw 1-8x3 in

Product Description

The VALUE COLLECTION D30170-3 is a partially threaded hex head cap screw designed for general fastening applications across a wide range of structural and mechanical assemblies. It measures 3 inches in length under the head with a 1-8 thread size in the Unified National Coarse (UNC) thread standard. Manufactured from Grade 5 steel with a zinc-plated finish, it offers solid tensile strength and basic corrosion resistance suitable for indoor and light outdoor use. This fastener meets ASME B18.2.1 and SAE J429 standards. It is a stock item for maintenance shops, contractors, and field service technicians who need reliable imperial-thread fasteners on hand.

This cap screw is suited for use in equipment assembly, structural connections, and general mechanical fastening where a UNC coarse-thread, partially threaded hex bolt is specified. The zinc-plated finish makes it appropriate for applications where moderate corrosion protection is required but not a high-performance coating. It is commonly installed in fabrication shops, mechanical rooms, and field maintenance environments by millwrights, pipefitters, general contractors, and maintenance technicians.

Key Features

• Grade 5 steel construction meets SAE J429 and ASME B18.2.1 standards
• 1-8 UNC thread size ensures wide tooling and nut compatibility
• Partial threading allows for grip-length clamping in bolted joints
• Zinc-plated finish provides basic corrosion resistance
• 3-inch length under head suits medium-depth fastening applications

Compatibility

Designed as an OEM-style replacement or stock fastener for any application requiring a 1-8 UNC hex head cap screw in Grade 5 steel with a zinc-plated finish per ASME B18.2.1 and SAE J429 specifications.

Installation Notes

Install using a standard hex wrench or socket set sized to the appropriate hex head dimension for this 1-8 fastener. Always de-energize and lock out equipment before replacing fasteners on mechanical or electrical assemblies. Do not reuse fasteners that show signs of thread damage, corrosion, or deformation. Torque to the value specified by the equipment manufacturer or applicable engineering standard for Grade 5 hardware.