Value Collection 581034PR Hex Socket Cap Screw 1-72 Unf

Product Description

The VALUE COLLECTION 581034PR is a hex socket cap screw designed for precision fastening applications requiring a fine-thread profile. Manufactured from alloy steel with a black oxide finish, this fastener measures 1 inch in length under the head and uses a 1/16 inch hex drive. The 1-72 UNF thread designation indicates a fine-pitch unified national thread, well-suited for small-diameter, high-strength connections where vibration resistance and close thread engagement are critical. It is partially threaded, which helps maintain clamping force in a range of structural and mechanical assemblies. Installation is typically performed by machinists, mechanical assemblers, or maintenance technicians.

This screw is commonly used in light-duty mechanical assemblies, precision instruments, electronics enclosures, and small-component fixtures where a fine-thread, small-diameter fastener is required. The black oxide coating provides mild corrosion resistance and reduces light reflection, making it a practical choice for both indoor mechanical and instrumentation environments. The hex socket drive allows installation with a standard hex key or Allen driver in confined spaces where a conventional screwdriver or wrench cannot fit.

Key Features

• 1-72 UNF fine-thread profile for high-thread engagement in small-diameter applications
• 1 inch length under head with partial threading for secure clamping
• 1/16 inch hex socket drive for use in tight or recessed installations
• Alloy steel construction meets ASME/ANSI B18.3 and ASTM A574 standards
• Black oxide coating provides mild corrosion resistance and a low-reflectance finish

Compatibility

Designed as a standard OEM-style replacement or stock fastener for any assembly specifying a 1-72 UNF hex socket cap screw with a 1 inch length under head and 1/16 inch hex drive, per ASME/ANSI B18.3 and ASTM A574.

Installation Notes

Install using a 1/16 inch hex key or Allen driver; ensure the drive tool is fully seated before applying torque to avoid rounding the socket. Power down or de-energize any equipment before fastener installation or removal when working near electrical components. Follow applicable mechanical assembly standards and inspect thread engagement before final tightening. Do not substitute a metric hex key, as an improperly sized driver will damage the socket recess.