Value Collection -30170-31/2 Hex Head Cap Screw

Product Description

The VALUE COLLECTION -30170-31/2 is a partially threaded hex head cap screw engineered for general industrial and mechanical fastening applications. Built to Grade 5 steel specification, it delivers reliable tensile strength for bolted assemblies where medium-strength carbon steel is specified. The zinc-plated finish provides a base level of corrosion resistance suitable for interior and light-duty service environments. At 3.5 inches under the head with a 1-8 UNC thread, this fastener is well suited to structural bolted connections, equipment framing, and machinery assembly work across mechanical and light fabrication trades.

This hex head cap screw is appropriate for residential and commercial mechanical applications where UNC inch-series fasteners are required. The partial threading leaves a smooth shank section that helps resist shear loading in clearance-hole applications. Tradespeople working in HVAC equipment mounting, plumbing rough-in framing, and general mechanical installations will find this fastener compatible with standard hex driver tooling and torque specifications for Grade 5 hardware. Packaged in quantities of 20, it suits bench-stock replenishment and job-site use.

Key Features

• Grade 5 steel construction for medium-strength fastening requirements
• Zinc-plated finish offers basic corrosion protection in dry or low-moisture environments
• Partial threading provides a smooth shank for shear-resistant bolted joints
• 1-8 UNC thread standard ensures compatibility with standard inch-series nuts and tapped holes
• 3.5-inch length under head suits deep-grip bolted assemblies and thick-material connections
• Packaged in quantities of 20 for bench-stock and service-truck replenishment

Compatibility

Designed for use in standard inch-series UNC threaded assemblies requiring a Grade 5 hex head cap screw with a 1-8 thread and 3.5-inch grip length.

Installation Notes

Installation should be performed by qualified mechanical or trade personnel using an appropriately sized hex wrench or socket driver. Apply Grade 5 torque values per applicable ASME or equipment manufacturer specifications; do not substitute these fasteners in applications requiring Grade 8 or metric-grade hardware. Inspect the mating nut or tapped hole for thread condition before installation. Follow applicable codes and lockout/tagout procedures when fastening components on energized or pressurized equipment.