Value Collection D39014 Hex Head Cap Screw 1/4-20 X 4 in

Product Description

The VALUE COLLECTION D39014 is a 1/4-20 hex head cap screw designed for heavy-duty fastening applications requiring high tensile strength and corrosion resistance. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers the mechanical performance and surface protection needed in demanding industrial, mechanical, and trade environments. The screw measures 4 inches in length under the head, features UNC threading, and is partially threaded per ASME B18.2.1 standards. Licensed tradespeople and maintenance professionals working with structural assemblies, machinery, and equipment supports rely on Grade 8 fasteners like this one where lower-grade hardware is not acceptable.

This cap screw is suited for use in mechanical assemblies, equipment frames, structural brackets, and general industrial fastening where a 1/4-20 UNC thread pattern is specified. The partial threading design is appropriate for applications requiring a grip length — such as bolted joints where the shank bears shear loads. The zinc yellow dichromate finish provides moderate corrosion protection, making it a practical choice for indoor industrial environments and service applications where mild exposure to moisture is a factor. This fastener is sold in a minimum order quantity of 25 units per order.

Key Features

• Grade 8 steel construction for high tensile and proof load requirements
• Zinc yellow dichromate finish for corrosion resistance
• 1/4-20 UNC thread size — standard coarse thread for broad tooling compatibility
• 4-inch length under head with partial threading for grip-length applications
• Conforms to ASME B18.2.1 dimensional standards
• Hex head drive for use with standard wrenches and sockets

Compatibility

Designed as a standard UNC hex head cap screw for any application specifying a 1/4-20 x 4-inch Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation of Grade 8 fasteners is typically performed by mechanical tradespeople, millwrights, or maintenance technicians using standard hex wrenches or impact sockets. Always verify thread engagement and mating nut or tapped hole grade before torquing. Do not mix Grade 8 fasteners with mismatched lower-grade nuts, as this can compromise joint integrity. Follow applicable equipment manufacturer torque specifications and relevant standards for the assembly type being serviced.