Value Collection 581070PR Hex Socket Cap Screw 2-64 Unf

Product Description

The VALUE COLLECTION 581070PR is a hex socket cap screw designed for precision fastening applications requiring tight tolerances and reliable clamping force in confined spaces. This screw features a 2-64 UNF thread size, a 3/4 inch length under head, and a 5/64 inch hex drive. It is manufactured from alloy steel and finished with a black oxide coating that provides mild corrosion resistance and reduces light reflection. Fully threaded along its entire length, this fastener is suited for secure engagement across the full thread engagement zone. Machinists, maintenance technicians, and precision assembly professionals install this type of fastener in instrumentation, tooling, fixtures, and small mechanical assemblies.

This screw is used in applications where a low-profile, high-strength fastener is required in tight clearance environments. The 2-64 UNF thread form is a fine-pitch designation common in small mechanical assemblies, precision instruments, and light-duty industrial fixtures. The hex socket drive allows torque application with a standard hex key or Allen driver in locations where a slotted or Phillips head would not be practical. Black oxide finish suits indoor or protected installations where moderate surface protection is acceptable.

Key Features

• 2-64 UNF fine thread for precise engagement in small tapped holes
• 5/64 inch hex socket drive for Allen key or ball-end hex driver use in tight spaces
• Fully threaded for maximum thread engagement across the 3/4 inch under-head length
• Alloy steel construction provides tensile strength appropriate for demanding fastening applications
• Black oxide finish offers mild corrosion protection and low-reflectance surface
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard hex socket cap screw per ASME/ANSI B18.3 for use in any tapped hole or threaded insert accepting a 2-64 UNF thread form in precision mechanical, instrumentation, or industrial fixture assemblies.

Installation Notes

Installation is performed with a 5/64 inch hex key or ball-end Allen driver; use of the correct driver size is essential to avoid rounding the socket. Ensure the mating tapped hole is clean and thread condition is verified before driving the fastener. Do not overtorque small-diameter alloy steel screws, as the thread engagement in soft materials can strip at relatively low applied torque. Follow applicable ASME or facility-specific torque guidance for the 2-64 UNF thread class when precise preload is required.