Value Collection D30170-7 Hex Head Cap Screw 1-8x7 Grade 5

Product Description

The VALUE COLLECTION D30170-7 is a partially threaded hex head cap screw designed for general structural and mechanical fastening applications. It features a 1-8 UNC thread size with a 7-inch length under head, manufactured from Grade 5 steel with a zinc-plated finish for basic corrosion resistance. This fastener conforms to ASME B18.2.1 and SAE J429 standards, making it suitable for use in assemblies where defined tensile strength and dimensional consistency are required. Machinists, millwrights, maintenance technicians, and general contractors use this type of fastener in equipment frames, structural connections, and machinery assembly.

This hex head cap screw is suited for medium-strength bolted connections in both commercial and industrial settings. The partial threading allows the unthreaded shank to act as a locating or bearing surface within a joint, which is common in clevis pins, hinge connections, and structural steel assembly. The UNC thread form is the standard coarse-pitch inch series, compatible with standard UNC nuts and tapped holes of the same designation.

Key Features

• 1-8 UNC thread size with 7-inch length under head for deep grip applications
• Partially threaded shank provides a smooth bearing surface for shear-loaded joints
• Grade 5 steel construction meets SAE J429 minimum tensile strength requirements
• Zinc-plated finish provides baseline corrosion protection in dry or mildly humid environments
• Conforms to ASME B18.2.1 for hex cap screw dimensional standards

Compatibility

Designed for use with standard 1-8 UNC hex nuts and tapped holes per UNC thread specifications in inch-system fastener applications.

Installation Notes

Installation is performed with a standard hex wrench or impact driver socket sized for a 1-inch nominal bolt. Ensure the mating nut or tapped hole is clean and free of debris before threading. Do not exceed the rated proof load for Grade 5 hardware; consult applicable fastener torque tables for the specific joint material and lubrication condition. Follow applicable codes and engineering requirements for the assembly being fastened.