Value Collection 592057PR Hex Socket Cap Screw 3-56 Unf

Product Description

The VALUE COLLECTION 592057PR is a hex socket cap screw designed for precision fastening applications requiring a compact, high-strength threaded connection. Sized at 3-56 UNF with a 3/8-inch length under head and a 5/64-inch hex drive, this fastener is fully threaded and manufactured from 18-8 austenitic stainless steel (Material Grade A2). The 18-8 alloy provides reliable corrosion resistance in environments exposed to moisture, mild chemicals, or temperature cycling. This screw meets ASME/ANSI B18.3 and ASTM F837 standards, making it appropriate for instrumentation, electrical enclosures, HVAC controls, and light mechanical assemblies where a low-profile socket drive fastener is required.

This fastener is suited for light-duty and precision applications across residential and commercial trades. Common install scenarios include securing terminal blocks, control board mounting hardware, panel components, and small-gauge metal assemblies. The 3-56 UNF thread is a fine-pitch imperial thread typically found in instrumentation-grade hardware, electronic enclosures, and OEM equipment service work. Licensed technicians and electricians working on control panels or equipment enclosures will encounter this screw size when replacing or servicing factory-installed hardware.

Key Features

• 3-56 UNF fully threaded profile provides secure engagement in fine-thread tapped holes
• 3/8-inch length under head suits shallow-clearance fastening applications
• 5/64-inch hex socket drive for use with standard hex keys or allen drivers
• 18-8 austenitic stainless steel (Grade A2) offers corrosion resistance without plating
• Meets ASME/ANSI B18.3 and ASTM F837 dimensional and material standards

Compatibility

Designed as an OEM-style replacement or service fastener for equipment and assemblies using 3-56 UNF threaded inserts or tapped holes with a hex socket cap screw specification.

Installation Notes

Installation requires a 5/64-inch hex key or matching allen driver. Verify that the receiving tapped hole matches the 3-56 UNF thread specification before installation to avoid cross-threading. De-energize and lock out any electrical or mechanical equipment before servicing fasteners on control panels or enclosures. Stainless-to-stainless installations carry a risk of galling — apply an appropriate anti-seize compound if assembling into a stainless tapped insert.