Value Collection D39008 Hex Head Cap Screw 1/4-20 X 2 in

Product Description

The VALUE COLLECTION D39008 is a 1/4-20 UNC hex head cap screw manufactured from Grade 8 steel with a zinc yellow dichromate finish. It measures 2 inches under the head and is partially threaded, making it suitable for applications that require a bearing surface or clamping without full-length thread engagement. Grade 8 steel provides high tensile strength for demanding fastener applications. The zinc yellow dichromate coating offers corrosion resistance and is visually identifiable by its gold-yellow color. This screw conforms to ASME B18.2.1 dimensional standards and is driven with a standard hex wrench or socket.

This cap screw is used in general industrial, mechanical, and structural assembly applications where a high-strength inch-series fastener is required. Typical installations include machinery frames, equipment brackets, jigs, fixtures, and structural connections in fabrication and maintenance environments. The partial thread configuration is well suited for through-bolt applications and situations where the shank must pass through a clearance hole before engaging a tapped bore or nut. Installers working to ASME standards will find this screw meets B18.2.1 dimensional requirements.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Zinc yellow dichromate finish provides corrosion resistance and easy visual identification
• Partially threaded shank suits clearance-hole and through-bolt applications
• 1/4-20 UNC thread form for broad compatibility with standard inch-series nuts and tapped holes
• Conforms to ASME B18.2.1 dimensional standards
• Hex head drive accepts standard hex sockets and wrenches

Compatibility

Designed for use with standard 1/4-20 UNC tapped holes and hex nuts in inch-series fastener applications conforming to ASME B18.2.1.

Installation Notes

Installation is typically performed by machinists, millwrights, pipefitters, or maintenance technicians using a standard hex socket or open-end wrench. Ensure mating threads are clean and free of debris before installation. Do not exceed the rated proof load for Grade 8 fasteners, and follow applicable torque guidelines from engineering references or job specifications. Thread locking compounds or washers should be selected based on application requirements and load conditions.