Value Collection 440068PR Hex Cap Screw 1/4-28 X 3 in Grade L9

Product Description

The VALUE COLLECTION 440068PR is a 1/4-28 UNF hex head cap screw manufactured from Grade L9 steel with a zinc yellow dichromate finish. At 3 inches in length under the head and partially threaded, this fastener is built for high-strength bolted connections where a standard hex head drive is required. Grade L9 steel delivers superior tensile strength compared to common Grade 5 or Grade 8 designations, making it well suited for demanding mechanical and structural assemblies. The zinc yellow dichromate coating provides corrosion resistance and serves as a visual identifier for the grade specification. Licensed tradespeople and maintenance technicians working in industrial and mechanical applications are the primary installers.

This cap screw is used in a wide range of industrial, mechanical, and equipment assembly applications where a fine-thread UNF pattern is specified. The 1/4-28 thread pitch is commonly found in precision assemblies, automotive components, and equipment housings where vibration resistance and tight thread engagement are priorities. The partial threading allows for a smooth shank grip length, which supports shear loading in bolted joint designs. Sold in a minimum order quantity of 10 pieces.

Key Features

• Grade L9 steel construction for high tensile strength bolted connections
• 1/4-28 UNF fine-thread pattern for vibration-resistant engagement
• Partially threaded shank supports shear loading in joint designs
• Zinc yellow dichromate finish provides corrosion resistance and grade identification
• 3-inch length under head suits deeper engagement or through-bolt applications
• 7/16-inch hex key size for standard wrench or socket drive

Compatibility

Designed for use in any application specifying a 1/4-28 UNF partially threaded hex head cap screw in Grade L9 steel with a zinc yellow dichromate finish.

Installation Notes

Installation should be performed by a qualified mechanic or maintenance technician familiar with fastener torque requirements for Grade L9 hardware. Use a 7/16-inch wrench or socket to drive the fastener. Inspect mating threads for damage or contamination before installation, and ensure the joint materials are compatible with the zinc dichromate finish. Follow applicable ASME or equipment manufacturer torque specifications for the joint design — do not over-torque fine-thread fasteners.