Value Collection D39121 Hex Head Cap Screw 1/2-13 X 6-1/2 in

Product Description

The VALUE COLLECTION D39121 is a partially threaded hex head cap screw sized 1/2-13 x 6-1/2 inches, manufactured from Grade 8 steel with a zinc yellow dichromate finish. Grade 8 steel offers high tensile strength suited for demanding fastener applications where joint integrity under load is critical. The zinc yellow dichromate coating provides corrosion resistance while serving as a visual indicator of the grade. This fastener follows Unified National Coarse (UNC) thread standards and conforms to ASME B18.2.1 and SAE J429. It is installed by HVAC technicians, plumbers, electricians, pipefitters, and general mechanical tradespeople in a wide range of structural and equipment-mounting applications.

This cap screw is suited for residential and commercial mechanical installations where a long, partially threaded Grade 8 fastener is required. Typical applications include equipment mounting, structural assemblies, and machinery fastening where high clamping force and controlled thread engagement are needed. The partial threading allows for a smooth shank section, which is advantageous in applications requiring a grip length or clearance hole fit. Sold individually with a minimum order quantity of 10 units.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastener applications
• Zinc yellow dichromate finish provides corrosion resistance and grade identification
• Partially threaded design with UNC 1/2-13 thread for controlled engagement and shank grip length
• Conforms to ASME B18.2.1 and SAE J429 dimensional and mechanical standards
• 1/2-13 x 6-1/2 inch sizing accommodates deeper joint and clamping requirements

Compatibility

Designed for use in standard 1/2-13 UNC threaded assemblies requiring a Grade 8 partially threaded hex head cap screw per ASME B18.2.1 and SAE J429 specifications.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with fastener torque requirements for Grade 8 hardware. Always verify thread engagement depth and confirm the mating nut or tapped hole is rated for Grade 8 loads before assembly. Do not mix Grade 8 fasteners with lower-grade nuts or threaded components. Follow applicable mechanical and structural codes for the specific installation environment.