Value Collection 451340BR Hex Head Cap Screw Grade 8

Product Description

The VALUE COLLECTION 451340BR is a heavy-duty hex head cap screw designed for high-strength fastening applications in structural, mechanical, and industrial assemblies. This fastener measures 1-8 x 15 inches with the length measured under the head and features partial threading along the shank. Manufactured from Grade 8 steel with a bright uncoated finish, it meets ASME B18.2.1 dimensional standards. The 1-8 UNC thread pitch and 1-1/2 inch hex key size make it compatible with standard industrial tooling. At 3.5 pounds, this is a substantial fastener suited for heavy load-bearing connections. Licensed tradespeople and millwrights working on structural frames, heavy equipment, and machinery mounts rely on this grade of fastener for its tensile and proof load ratings.

This hex head cap screw is used across a wide range of industrial and construction applications where high clamping force and shear resistance are required. Typical use cases include structural steel connections, heavy machinery assembly, agricultural equipment repair, and OEM fabrication. The partial threading keeps the unthreaded shank in the grip area, which is important for joints that require the shank to bear shear loads rather than distributing stress across threads. It is appropriate for both shop assembly and field installation by experienced mechanical tradespeople.

Key Features

• Grade 8 steel construction provides high tensile strength for demanding load applications
• Partially threaded shank preserves shear load capacity at the grip area
• 1-8 UNC thread standard ensures broad tooling and nut compatibility
• Meets ASME B18.2.1 dimensional standards for consistent fitment
• Bright uncoated finish is suitable for dry indoor environments or where secondary coating will be applied
• 1-1/2 inch hex key size works with standard industrial wrenches and sockets

Compatibility

Designed as a standard inch-series hex head cap screw compatible with 1-8 UNC hex nuts, washers, and threaded components conforming to ASME B18.2.1 specifications.

Installation Notes

Installation is typically performed by mechanical tradespeople, millwrights, or structural ironworkers using standard open-end, box, or impact wrenches sized for a 1-1/2 inch hex. Always degrease mating surfaces and inspect threads before assembly. Apply torque specifications per the joint engineering requirements for Grade 8 fasteners as published in ASME or applicable structural codes. Do not substitute a lower-grade nut or hardware on a Grade 8 screw, as the full joint strength depends on matched-grade components.