Value Collection 451020BR Hex Cap Screw 1-1/8-12 X 5-1/2 Grade 8

Product Description

The VALUE COLLECTION 451020BR is a partially threaded hex head cap screw in the 1-1/8-12 thread size, measuring 5.5 inches under the head. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener meets ASME B18.2.1 dimensional standards. The UNF (Unified National Fine) thread form and Grade 8 material rating make it suited for high-strength bolted connections where precise clamping loads are critical. It weighs 1.89 pounds. Tradespeople and industrial maintenance technicians use this screw where structural and mechanical joint integrity is required.

This cap screw is appropriate for heavy equipment assemblies, structural steel fabrication, machinery mounting, and industrial maintenance applications requiring a fine-thread, high-strength fastener. The partial threading allows the unthreaded shank to bear shear loads across a joint, a configuration commonly specified in machine design and structural bolting. A 1-11/16-inch hex key or wrench is required for installation.

Key Features

• Grade 8 steel construction for high-strength bolted joint applications
• Partially threaded shank suited for shear-load and close-tolerance fits
• UNF thread standard (1-1/8-12) for finer thread engagement and higher clamp load than coarse thread equivalent
• Bright uncoated finish — no coating buildup to affect thread fit or torque values
• Conforms to ASME B18.2.1 dimensional standard
• 1-11/16-inch hex drive for standard wrench compatibility

Compatibility

Designed as a standard ASME B18.2.1 inch-series hex head cap screw suitable for any application specifying a 1-1/8-12 UNF Grade 8 partially threaded fastener with 5.5 inches of length under the head.

Installation Notes

Installation should be performed by qualified mechanical, structural, or maintenance tradespeople familiar with high-strength fastener torque procedures. Always verify hole diameter and thread class before installation to ensure proper fit. Use a calibrated torque wrench and follow applicable industry or equipment manufacturer torque specifications for Grade 8 fasteners of this diameter. De-energize, depressurize, or otherwise render safe any equipment before servicing fastened joints.