Value Collection -30170-3 Hex Cap Screw 1-8x3 Grade 5

Product Description

The VALUE COLLECTION -30170-3 is a partially threaded hex head cap screw designed for general-purpose mechanical fastening in trade and industrial applications. Manufactured from Grade 5 steel with a zinc-plated finish, this fastener meets ASME B18.2.1 and SAE J429 standards for dimensional accuracy and tensile strength. The 1-8 thread size follows Unified National Coarse (UNC) specifications, and the 3-inch length is measured under the head. The zinc plating provides a baseline level of corrosion resistance suitable for indoor and sheltered environments. Sold in a package quantity of 20 per order.

This hex head cap screw is suited for use in structural assemblies, equipment mounting, and mechanical connections where a Grade 5 fastener is specified. Partial threading allows the unthreaded shank to act as a shoulder or locating surface, making it appropriate for joint connections where shear load distribution matters. Typical applications include HVAC equipment mounting frames, plumbing support brackets, electrical panel mounting, and general mechanical equipment assembly in both residential and light commercial settings.

Key Features

• Grade 5 steel construction meets SAE J429 and ASME B18.2.1 dimensional standards
• Zinc-plated finish provides corrosion resistance for sheltered or indoor use
• Partially threaded shank suits applications requiring a shoulder or shear surface
• 1-8 UNC thread size for compatibility with standard coarse-thread nuts and tapped holes
• 3-inch length measured under the head per ASME B18.2.1 convention
• Package quantity of 20 supports job-lot use without excess inventory

Compatibility

Designed as a standard inch-series hex head cap screw for use with 1-8 UNC tapped holes or matching nuts in mechanical and structural assemblies conforming to ASME B18.2.1 and SAE J429 requirements.

Installation Notes

Installation is typically performed by a mechanic, pipefitter, electrician, or HVAC technician depending on the application. Always match the nut or tapped hole thread class to the fastener before assembly. Ensure mating surfaces are clean and free of debris before driving. Do not substitute a lower-grade fastener where Grade 5 is specified by equipment manufacturer torque and load tables.