Value Collection 581524PS Hex Socket Cap Screw 7/16-20 Unf

Product Description

The VALUE COLLECTION 581524PS is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and industrial equipment. It features a 7/16-20 UNF thread with a 2.25-inch length under head and is driven by a 3/8-inch hex key. Constructed from alloy steel with a black oxide coating, this fastener delivers corrosion resistance and a low-reflectance finish suited to precision and structural applications. It is partially threaded, which allows it to function as a shoulder-style fastener where shank-to-bore contact is required. The 0.23-pound individual weight reflects the solid alloy steel construction.

This socket cap screw is appropriate for use in machine tool fixtures, jigs, hydraulic assemblies, dies, and other close-tolerance mechanical components requiring a fine-thread fastener. The 7/16-20 UNF thread pitch is commonly selected where increased thread engagement and vibration resistance are priorities over the coarser UNC series. Machinists, maintenance mechanics, and industrial MRO technicians are the primary installers.

Key Features

• 7/16-20 UNF fine thread for high engagement strength and vibration resistance
• Partial threading allows shank contact with bore walls for precision alignment
• Alloy steel construction meets ASTM A574 high-strength socket screw standard
• Black oxide finish provides mild corrosion protection and reduces surface reflectance
• 3/8-inch hex drive size for use with standard Allen keys and hex bit drivers
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for tapped holes accepting a 7/16-20 UNF thread in alloy steel, tool steel, aluminum, and other structural materials.

Installation Notes

This fastener is installed by machinists and maintenance mechanics using a 3/8-inch hex key or Allen-style bit driver. Ensure the receiving tapped hole is clean, properly sized to 7/16-20 UNF, and free of debris before installation. Do not exceed the rated proof load for the ASTM A574 grade by applying excessive torque. De-energize and lock out any machine or assembly before removing or replacing structural fasteners.