Value Collection 440422PR Hex Head Cap Screw 9/16 X 1 in L9

Product Description

The VALUE COLLECTION 440422PR is a fully threaded hex head cap screw engineered for high-strength fastening applications. Sized at 9/16-12 UNC with a 1-inch length under head, this fastener is manufactured from Grade L9 steel and finished with a zinc yellow dichromate coating that provides corrosion resistance in demanding service environments. The hex drive measures 13/16 inch across flats, accepting a standard hex socket or wrench. Grade L9 denotes an alloy steel fastener with elevated tensile strength, making it suitable for critical clamping loads where standard Grade 5 or Grade 8 hardware may be insufficient. Licensed trades and industrial maintenance professionals typically specify this grade for heavy equipment, hydraulic connections, and structural assemblies.

This cap screw is suited for general industrial, mechanical, and structural fastening applications where a UNC thread form is required. The fully threaded body provides consistent thread engagement along the full length under head, which is advantageous in thin-material joints or wherever maximum thread contact is needed. Typical use cases include equipment assembly, maintenance and repair of heavy machinery, and fabrication work requiring a high-strength inch-series fastener. The zinc yellow dichromate finish offers added protection in environments with moderate moisture or chemical exposure.

Key Features

• Grade L9 steel construction for high tensile strength in critical fastening applications
• Fully threaded 9/16-12 UNC body maximizes thread engagement for the full 1-inch length under head
• Zinc yellow dichromate finish provides corrosion resistance in moderate-exposure environments
• 13/16-inch hex key size accepts standard sockets and open-end wrenches
• Inch measurement system with UNC thread standard for compatibility with common inch-series hardware

Compatibility

Designed as an OEM-style replacement or general-use fastener for applications requiring a 9/16-12 UNC fully 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 high-strength fastener procedures. De-energize, depressurize, or otherwise make safe any equipment before replacing fasteners in load-bearing or pressurized assemblies. Use a calibrated torque wrench and follow the equipment manufacturer's torque specifications for Grade L9 hardware — do not substitute generic torque tables from lower-grade fastener specifications. Inspect mating threads for damage or contamination before installation, and replace any hardware that shows signs of galling, corrosion, or deformation.