Value Collection 440408PR Hex Cap Screw 1/2-20 X 5 in Grade L9

Product Description

The VALUE COLLECTION 440408PR is a partially threaded hex head cap screw designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. It is manufactured from Grade L9 steel with a zinc yellow dichromate finish that provides corrosion resistance in demanding service environments. The screw measures 1/2-20 thread size with a 5-inch length under head, conforming to Unified National Fine (UNF) thread standards. The 3/4-inch hex key size is compatible with standard drive tooling. This fastener is installed by machinists, millwrights, and maintenance technicians working on equipment assemblies that require fine-thread, high-load fasteners.

The 440408PR is suited for use in precision mechanical assemblies, heavy equipment, and industrial machinery where UNF thread engagement and Grade L9 strength ratings are specified. The partial threading allows for clearance through unthreaded material before engaging the threaded portion, which is common in bolted joint configurations requiring a grip length. This screw is appropriate for both original equipment and MRO replacement applications across manufacturing, field service, and shop environments.

Key Features

• Grade L9 steel construction provides high tensile strength for demanding load applications
• Zinc yellow dichromate finish offers corrosion protection in industrial and outdoor environments
• Partially threaded shank allows for proper grip length in bolted joint assemblies
• UNF 1/2-20 thread standard ensures precise thread engagement and fit
• 5-inch length under head accommodates thicker material stacks or extended grip lengths
• 3/4-inch hex drive size is compatible with standard wrenches and sockets

Compatibility

Designed as a standard UNF hex head cap screw for use in any assembly specifying a 1/2-20 thread, 5-inch length under head, Grade L9 steel fastener with partial threading.

Installation Notes

Installation is performed by qualified mechanics, machinists, or maintenance technicians using a 3/4-inch wrench or socket. De-energize and lock out equipment before performing any fastener installation or replacement on powered machinery. Inspect mating threads for damage or contamination before assembly. Follow applicable torque specifications from the equipment manufacturer or relevant fastener standards for Grade L9 UNF hardware.