Value Collection 581030PR Hex Socket Cap Screw 1-72 Unf

Product Description

The VALUE COLLECTION 581030PR is a hex socket cap screw designed for precision fastening in tight-clearance applications where a standard hex head wrench cannot fit. Manufactured from alloy steel with a black oxide finish, this screw resists corrosion and reduces light reflection in service environments. The fastener uses a 1/16 inch hex drive and measures 5/8 inch in length under the head. It is fully threaded to a 1-72 UNF specification, making it suited for fine-pitch connections in small mechanical assemblies, instrument enclosures, and precision equipment. Machinists, tool and die technicians, and equipment maintenance professionals are the primary installers of this fastener type.

This screw is commonly used in light-duty mechanical assemblies requiring a fine unified thread at the number-1 diameter. Applications include instrument panels, jigs, fixtures, electronic enclosures, and precision machine components where controlled clamping force and minimal fastener footprint are required. The black oxide coating provides mild corrosion protection and is appropriate for indoor or low-moisture environments. This SKU is sold individually but carries a minimum order quantity of 100 pieces.

Key Features

• 1-72 UNF fully threaded profile for fine-pitch engagement in small-diameter tapped holes
• 1/16 inch hex socket drive for use with standard Allen keys or hex bit drivers
• 5/8 inch length under head provides adequate thread engagement in typical panel and fixture stock
• Alloy steel construction meets ASTM A574 mechanical requirements for socket cap screws
• Black oxide finish reduces surface corrosion and minimizes glare in precision assembly environments
• Conforms to ASME/ANSI B18.3 dimensional standards for hex socket cap screws

Compatibility

Designed for use in any tapped 1-72 UNF hole conforming to ASME/ANSI B18.3 standards. Suitable for precision mechanical assemblies, instrument housings, jigs, and fixtures that require a number-1 fine-thread socket cap screw.

Installation Notes

Installation requires a 1/16 inch hex key or matching bit driver. Verify that the mating tapped hole conforms to 1-72 UNF thread class before driving to avoid cross-threading in small-diameter threads. Do not exceed the recommended seating torque for a number-1 alloy steel fastener, and inspect the drive socket for wear before use to prevent stripping. A qualified machinist or mechanical technician should perform installation where thread engagement depth or clamping load is critical.