Value Collection 99014 Hex Head Cap Screw 1/4-20 Grade 8

Product Description

The VALUE COLLECTION 99014 is a partially threaded hex head cap screw sized 1/4-20 x 3-1/2 inches, manufactured from Grade 8 steel with no surface coating. Grade 8 is a high-strength fastener classification suited for heavy-duty structural and mechanical connections where shear and tensile loads demand reliable clamping force. The UNC (Unified National Coarse) thread form provides broad compatibility with standard tapped holes and nuts. Length is measured under the head at 3-1/2 inches. This screw meets ASME B18.2.1 dimensional standards. Machinists, millwrights, and maintenance technicians regularly specify Grade 8 hex cap screws for equipment assembly, structural steel work, and general industrial fastening.

This fastener is appropriate for use in industrial equipment assembly, machinery mounting, structural steel connections, and general mechanical applications requiring high-strength inch-series hardware. The uncoated finish suits interior dry environments or applications where a secondary coating or plating will be applied post-installation. The partially threaded shank provides a smooth grip zone that resists side loading in bolted joint applications. Sold in a package quantity of 100 pieces, this screw is well suited for shop stock, maintenance departments, or contractors who regularly use 1/4-20 fasteners in high-strength applications.

Key Features

• Grade 8 steel construction for high tensile and proof-load strength
• Partially threaded shank with UNC 1/4-20 thread form
• 3-1/2 inch length measured under head per ASME B18.2.1
• Uncoated finish — compatible with post-installation plating or coating processes
• Meets ASME B18.2.1 dimensional standard for inch-series hex cap screws
• Package quantity of 100 pieces for stock and bulk use

Compatibility

Designed for use with standard 1/4-20 UNC tapped holes and hex nuts conforming to inch-series fastener standards. Compatible with Grade 8 or Grade F hex nuts and hardened flat washers in high-strength bolted joint assemblies.

Installation Notes

Installation is performed by machinists, millwrights, or qualified maintenance technicians using a standard hex wrench or socket set sized for a 1/4-inch hex cap screw head. Always verify thread engagement depth meets fastener specification requirements before applying torque. Use hardened washers under the head when bearing surfaces are softer than the fastener material. Follow applicable industry standards or equipment manufacturer torque specifications for the specific joint application.