Value Collection D39002 Hex Head Cap Screw 1/4-20 X 3/4 in

Product Description

The VALUE COLLECTION D39002 is a fully threaded hex head cap screw designed for high-strength fastening applications in mechanical assembly, maintenance, and fabrication work. Sized at 1/4-20 thread with a 3/4-inch length under head, it is manufactured from Grade 8 steel and finished with a zinc yellow dichromate coating that provides corrosion resistance in demanding service environments. Conforming to ASME B18.2.1, this fastener meets standardized dimensional tolerances for consistent fit and torque performance. It is a staple hardware item for HVAC technicians, pipefitters, electricians, and general maintenance professionals who need a reliable, high-tensile fastener for equipment mounting and structural connections.

This cap screw is suited for use in light-to-medium structural assemblies, equipment panels, brackets, and mechanical enclosures across residential and commercial trade applications. The UNC thread form is compatible with standard tapped holes and nuts in inch-based systems. Its compact 3/4-inch length under head makes it appropriate for shallow-clearance fastening points common on HVAC equipment frames, electrical enclosures, and plumbing support hardware. Minimum order quantity is 50 pieces.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish for corrosion resistance in service environments
• Fully threaded 1/4-20 UNC thread form for maximum thread engagement
• 3/4-inch length under head suits shallow-clearance fastening applications
• Conforms to ASME B18.2.1 for standardized dimensional compliance

Compatibility

Designed as a standard inch-series hex head cap screw for use with 1/4-20 UNC tapped holes and compatible nuts in general mechanical, HVAC, electrical, and plumbing trade assemblies.

Installation Notes

Installation is performed with a standard hex wrench or socket driver sized for a 1/4-20 fastener. De-energize and lock out equipment before fastening or removing hardware on electrical or mechanical assemblies per applicable NFPA 70E and OSHA lockout/tagout procedures. Do not exceed the rated tensile strength of the fastener by over-torquing, and use hardened washers when bearing on softer substrate materials to prevent galling or pull-through.