Value Collection 581532PS Hex Socket Cap Screw 7/16-20 Unf

Product Description

The VALUE COLLECTION 581532PS is a hex socket cap screw designed for high-strength bolted assemblies requiring precise torque application in confined or recessed spaces. Built from alloy steel with a black oxide finish, this fastener measures 4 inches in length under the head and carries a 7/16-20 UNF thread specification with partial threading. The 3/8-inch hex drive accepts a standard hex key or Allen driver. Manufactured to ASME/ANSI B18.3 and ASTM A574 standards, it delivers the tensile strength and dimensional consistency expected in structural and mechanical applications.

This screw suits metal fabrication, machinery assembly, industrial maintenance, and mechanical engineering applications where a flush or low-profile cap screw head is required. The 7/16-20 UNF fine thread pitch provides strong clamping force and resistance to loosening under vibration, making it appropriate for equipment frames, jigs, fixtures, and precision assemblies. Installation is performed by machinists, millwrights, industrial mechanics, and maintenance technicians across manufacturing and equipment-service environments.

Key Features

• 7/16-20 UNF fine thread for high clamping strength and vibration resistance
• 4-inch length under head with partial threading for unthreaded shank grip
• Alloy steel construction meets ASTM A574 high-strength fastener requirements
• Black oxide finish provides mild corrosion resistance and reduced light reflection
• 3/8-inch hex socket drive compatible with standard hex keys and socket drivers
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as an OEM-style replacement or standard-stock hex socket cap screw for any assembly specifying a 7/16-20 UNF, 4-inch, partially threaded alloy steel socket head cap screw per ASME/ANSI B18.3.

Installation Notes

Installation is performed by qualified machinists, millwrights, or mechanical technicians using a calibrated torque wrench and a correctly sized 3/8-inch hex key or bit. Verify thread condition in the receiving hole before installation and ensure the mating tapped hole meets 7/16-20 UNF specifications. De-energize and lock out all equipment before performing fastener service on live machinery. Do not exceed the fastener grade torque rating specified in the applicable engineering documentation for the assembly.