Value Collection 307245BR Hex Socket Cap Screw 1-8 Unc

Product Description

The VALUE COLLECTION 307245BR is a hex socket cap screw designed for high-strength fastening applications where a clean, recessed drive is required. The screw features a 1-8 UNC thread size, a 5.5-inch length under head, and is driven with a 5/8-inch hex key. Constructed from alloy steel with a black oxide finish, this fastener meets ASTM A574 specifications, making it suitable for demanding mechanical assemblies where tensile strength and corrosion resistance are priorities. It is partially threaded, which allows for precise clamping force in bolted joint applications.

This screw is used in industrial, mechanical, and structural assembly applications where a flush or countersunk socket drive is preferred over an external hex head. Typical installation scenarios include machine frames, fixtures, tooling plates, and heavy equipment assemblies. The partially threaded shank provides a clean bearing surface in the joint, reducing the risk of thread engagement in the grip area. Suitable for use by millwrights, machinists, maintenance technicians, and general mechanical contractors.

Key Features

• 1-8 UNC thread size for standard coarse-thread fastening
• 5.5-inch length under head for deep-reach or thick-stack assemblies
• 5/8-inch hex socket drive for high-torque installation
• Partially threaded shank provides a clean grip zone in the joint
• Alloy steel construction meets ASTM A574 for high-strength performance
• Black oxide finish provides mild corrosion resistance and reduced light reflection

Compatibility

Designed as an OEM-style replacement or direct-use fastener for applications requiring 1-8 UNC coarse-thread hex socket cap screws conforming to ASTM A574.

Installation Notes

Installation should be performed by a qualified mechanic or technician using a properly sized 5/8-inch hex key or socket driver. Ensure mating threads are clean and free of debris before installation. Follow applicable torque specifications from your assembly engineering documentation, as none are specified by the manufacturer for this listing. Power down and de-energize any equipment before performing fastener service on live machinery.