Value Collection 99105 Hex Head Cap Screw 1/2-13 Grade 8

Product Description

The VALUE COLLECTION 99105 is a fully threaded hex head cap screw designed for high-strength bolted connections in mechanical and structural applications. Manufactured from Grade 8 steel with no surface coating applied, this fastener meets ASME B18.2.1 dimensional standards. The 1/2-13 UNC thread designation indicates a half-inch nominal diameter with 13 threads per inch, and the 1-1/4 inch length is measured from under the head. Grade 8 steel delivers significantly higher tensile and yield strength compared to Grade 5 or Grade 2 fasteners, making it appropriate for demanding load-bearing assemblies. Each package contains 50 screws.

This cap screw is suited for general industrial, mechanical, and equipment assembly work where UNC coarse-thread fasteners are specified. The fully threaded shank provides maximum thread engagement across the full grip length, which is useful in applications where the fastener threads into a tapped hole rather than passing through a clearance bore with a nut. Licensed tradespeople, maintenance technicians, and assembly professionals working on machinery, structural brackets, HVAC equipment frames, and similar assemblies will find this fastener appropriate for high-clamp-load bolted joints.

Key Features

• Grade 8 steel construction for high tensile strength bolted connections
• Fully threaded shank for maximum thread engagement in tapped holes
• 1/2-13 UNC coarse thread, measured 1-1/4 inches under head
• Uncoated finish — suitable for applications where coatings are not required or where the installer will apply their own protective treatment
• Conforms to ASME B18.2.1 dimensional standard
• Sold in a 50-piece package to support service stock and job-site use

Compatibility

Designed as a standard UNC hex head cap screw for use in any application specifying a 1/2-13 x 1-1/4 inch Grade 8 fully threaded fastener per ASME B18.2.1.

Installation Notes

Installation of Grade 8 fasteners should follow applicable torque specifications from the equipment manufacturer or a recognized fastener standard such as ASME or SAE guidelines. De-energize or lock out all equipment before replacing fasteners in mechanical or electrical enclosures. Use the correct hex drive socket or wrench to avoid rounding the head. Do not use Grade 8 cap screws in applications that require a coated or plated fastener for corrosion resistance without first verifying suitability.