Value Collection 99067 Hex Cap Screw 3/8-16 X 4.5 in Grade 8

Product Description

The VALUE COLLECTION 99067 is a 3/8-16 hex head cap screw designed for heavy-duty mechanical and structural fastening applications. Manufactured from Grade 8 steel in an uncoated finish, this fastener delivers high tensile strength suited to demanding industrial and trade environments. The screw measures 4-1/2 inches under the head and features partial threading conforming to UNC thread standards. It is sold in a package quantity of 25 and is compliant with ASME B18.2.1 dimensional standards. Machinists, millwrights, pipefitters, and general contractors rely on Grade 8 fasteners where standard Grade 5 hardware is insufficient.

This hex head cap screw is appropriate for a wide range of industrial, mechanical, and structural assembly applications requiring high-strength inch-series fasteners. Partial threading provides a grip-length shank section, which improves shear resistance in bolted joints where the bolt passes through a structural member before engaging a nut or tapped hole. Typical install scenarios include equipment mounting, structural steel connections, HVAC equipment bases, pump and motor fastening, and general mechanical assemblies requiring UNC-thread hardware.

Key Features

• Grade 8 steel construction for high tensile and proof-load strength
• 3/8-16 UNC thread size in inch measurement system
• 4-1/2 inches length under head with partial threading for shear-critical joints
• Uncoated finish suitable for dry or protected indoor environments
• Compliant with ASME B18.2.1 dimensional standard
• Packaged in quantities of 25 with a minimum order quantity of 1

Compatibility

Designed as a standard inch-series hex head cap screw compatible with 3/8-16 UNC tapped holes and standard hex nuts across general mechanical, structural, and equipment fastening applications.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or trade professional familiar with torque requirements for Grade 8 fasteners at this thread size. Always use a calibrated torque wrench and apply torque values per the applicable engineering specification or fastener manufacturer guideline for Grade 8 hardware. Inspect threads and mating surfaces for damage or contamination before assembly. Do not use impact tools to final-torque structural fasteners without a verified torque confirmation method.