Value Collection KP44053 3/8-16 X 4-1/2 in Grade 8 Hex Cap Screw

Product Description

The VALUE COLLECTION KP44053 is a Grade 8 steel hex head cap screw designed for high-strength fastening applications requiring superior tensile and proof load performance. Sized at 3/8-16 UNC thread with a 4-1/2 inch length under head, this fastener features partial threading and a zinc-plated finish that provides baseline corrosion resistance for general service environments. It meets ASTM A354 BD standards, confirming its mechanical properties for structural and mechanical assembly work. Licensed tradespeople, millwrights, and maintenance technicians reach for Grade 8 hardware when joint integrity under sustained load or vibration is a requirement.

This screw is suited for heavy-duty mechanical assemblies, equipment mounting, structural connections, and industrial maintenance applications where standard Grade 5 hardware does not meet load requirements. The 3/8-16 UNC thread form is one of the most common inch-series sizes found in HVAC equipment frames, pump assemblies, electrical enclosure mounting, and general trade fabrication. The partial threading allows the unthreaded shank to bear shear loads in clearance-hole applications. This listing contains 25 pieces per package.

Key Features

• Grade 8 steel construction meets ASTM A354 BD mechanical requirements for high-strength fastener service
• 3/8-16 UNC thread form compatible with the most widely used inch-series hardware in trade applications
• 4-1/2 inch length under head accommodates thicker stack-ups and through-bolting configurations
• Partial threading allows shank to carry shear loads in clearance-hole joints
• Zinc-plated finish provides corrosion resistance for indoor and moderate-exposure installations
• Sold in a 25-piece package to support service calls and small-batch fabrication work

Compatibility

Designed for use with standard 3/8-16 UNC inch-series nuts, washers, and threaded inserts in mechanical, structural, and equipment-mounting applications across HVAC, plumbing, electrical, and general industrial trades.

Installation Notes

Installation should be performed by a qualified technician using the appropriate 9/16 inch hex socket or wrench. Ensure mating threads are clean and free of debris before assembly. Always verify that the fastener grade matches the joint design requirements — do not substitute lower-grade hardware in Grade 8 specified connections. De-energize and lock out any equipment before accessing fastened assemblies on live systems.