Value Collection 592064PR Hex Socket Cap Screw 3-56 Unf

Product Description

The VALUE COLLECTION 592064PR is a hex socket cap screw designed for precision fastening in mechanical assemblies and light-duty structural applications. It carries a 3-56 UNF thread size with 1 inch of length under the head and is partially threaded along the shank. Drive engagement is through a 5/64 inch hex socket. Constructed from 18-8 austenitic stainless steel (Grade A2), this fastener resists corrosion in wet or chemically active environments. It meets ASME/ANSI B18.3 and ASTM F837 standards, making it appropriate for applications where dimensional and material traceability matter. Machinists, maintenance technicians, and industrial assemblers commonly work with this screw type.

This screw is suited for use in close-tolerance assemblies where a hex socket drive allows torque application in confined spaces. The fine 56 threads-per-inch pitch provides strong clamping force in thin or soft materials. Partial threading leaves a smooth shank section that can serve as a locating feature or reduce stress concentration near the head. Applications include instrument panels, jigs, fixtures, and precision mechanical equipment where corrosion resistance and dimensional consistency are required.

Key Features

• 3-56 UNF thread with 56 threads per inch for fine-pitch clamping
• 1 inch length under head with partial threading for shank-locate applications
• 5/64 inch hex socket drive for use in tight clearance areas
• 18-8 stainless steel, Austenitic Grade A2, for corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM F837 dimensional and material standards

Compatibility

Designed as an OEM-style replacement or standard-service fastener for assemblies requiring 3-56 UNF hex socket cap screws with a 1 inch length under head and 5/64 inch drive.

Installation Notes

Installation is typically performed by machinists or maintenance technicians using a 5/64 inch hex key or Allen driver. Ensure mating threads are clean and free of debris before driving the screw. Do not exceed the recommended torque range for 3-56 stainless steel fasteners as published in applicable engineering references, since overtorque can cause galling in stainless-to-stainless thread engagement. Apply an anti-galling compound if driving into stainless tapped holes.