Value Collection MP72144 Hex Socket Cap Screw 5/16-18 Unc

Product Description

The VALUE COLLECTION MP72144 is a hex socket cap screw designed for secure, high-strength fastening in mechanical assemblies and structural applications. It features a 5/16-18 UNC thread with a 3-inch length under head and is partially threaded for controlled engagement. The 1/4-inch hex drive allows torque application with a standard hex key or Allen driver. Constructed from alloy steel with a black oxide finish, this fastener offers improved corrosion resistance and reduced light reflection compared to bare steel. It meets ASME B18.3 and ASTM A574 standards, making it suitable for demanding service environments. Sold in a pack of 10.

This fastener is used across a wide range of trade and industrial applications, including HVAC equipment mounting, electrical panel assembly, plumbing fixture installation, pump and motor mounting, and general mechanical fabrication. The 5/16-18 UNC thread is one of the most common coarse-thread sizes in North American trade work, making this screw a practical stocking item for service vans, shops, and maintenance crews. The partially threaded shank provides added shear strength at the joint interface.

Key Features

• 5/16-18 UNC coarse thread for reliable engagement in tapped holes
• 3-inch length under head, partially threaded for improved shear resistance
• 1/4-inch hex drive compatible with standard Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 high-strength fastener specification
• Black oxide coating provides mild corrosion resistance and low-glare finish
• Conforms to ASME B18.3 socket cap screw dimensional standards

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw suitable for use in any application requiring an ASME B18.3 compliant socket head cap screw of this thread size and length.

Installation Notes

Installation requires a 1/4-inch hex key or Allen-drive bit. Ensure the mating tapped hole is clean and free of debris before threading. Apply appropriate thread torque per the fastener specification for ASTM A574 alloy steel hardware. Power down or de-energize any equipment being serviced before accessing fastened assemblies.