Value Collection -48546-4 Hex Socket Cap Screw 3/8-16 Unc

Product Description

The VALUE COLLECTION -48546-4 is a partially threaded hex socket cap screw designed for general mechanical fastening applications in industrial, commercial, and trade settings. It features a 3/8-16 UNC thread size and a 7-inch length under head, making it suitable for deeper fastening applications where standard-length screws fall short. The alloy steel construction is finished with a black oxide coating, which provides moderate corrosion resistance and reduces light glare on the fastener head. A 5/16-inch hex drive (Allen key) is required for installation. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, confirming dimensional and mechanical property compliance for load-bearing use.

This socket cap screw is suited for machinery assembly, structural fixturing, and equipment maintenance where a recessed hex drive is preferred over an external hex head. The partial threading allows the unthreaded shank to bear shear loads, a common requirement in pivot points, clevis joints, and precision-fit bores. Machinists, millwrights, and maintenance technicians typically select this style when access is limited or a flush or recessed fastener profile is needed. It is sold in a minimum order quantity of 5 pieces.

Key Features

• 3/8-16 UNC thread for compatibility with standard inch-series tapped holes
• 7-inch length under head suits deep-reach fastening applications
• Partially threaded shank transfers shear loads through the unthreaded body
• 5/16-inch hex socket drive accepts standard Allen keys and hex bits
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and low-glare appearance

Compatibility

Designed as an OEM-style replacement or standard stock fastener for machinery, fixtures, and equipment using 3/8-16 UNC tapped holes requiring a socket cap screw with a 7-inch length under head.

Installation Notes

Installation requires a 5/16-inch hex key or Allen bit driver. Ensure the mating tapped hole is clean and free of debris before threading. Apply appropriate thread lubricant or thread-locking compound per the equipment manufacturer's torque specification, as no torque value is supplied with this fastener. Always de-energize and lock out equipment before performing fastener service on mechanical assemblies.