Value Collection 592181PR Hex Socket Cap Screw 8-36 Unf

Product Description

The VALUE COLLECTION 592181PR is a hex socket cap screw designed for secure fastening in applications requiring a low-profile, internal-drive head. Threaded 8-36 UNF with a 1/4 inch length under head, this fastener is fully threaded and driven with a 9/64 inch hex key. Constructed from 18-8 austenitic stainless steel (ASTM A2 grade), it resists corrosion in wet, chemical, and outdoor environments. It meets ASME/ANSI B18.3 and ASTM F837 standards, making it a reliable choice for precision assemblies where dimensional consistency and material traceability are required.

This fastener is suited for light-duty mechanical assemblies, instrumentation enclosures, HVAC equipment panels, electrical enclosures, and plumbing fixture components. The fine 36-TPI UNF thread pitch provides stronger thread engagement and better resistance to vibration loosening compared to coarse-thread equivalents, which makes it a practical choice in applications subject to operational vibration or where precise clamping force is needed. Typically installed by machinists, millwrights, or mechanical contractors during equipment assembly or field repair work.

Key Features

• 8-36 UNF fine thread for higher thread engagement and vibration resistance
• Fully threaded along the 1/4 inch length under head
• 9/64 inch hex socket drive for use with standard Allen or hex key sets
• 18-8 austenitic stainless steel construction, ASTM A2 grade
• Meets ASME/ANSI B18.3 and ASTM F837 dimensional and material standards
• Corrosion-resistant finish suitable for wet and outdoor service environments

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for use in any application requiring an 8-36 UNF fully threaded fastener with a 1/4 inch length under head.

Installation Notes

Install using a calibrated 9/64 inch hex key or Allen driver; avoid oversized or worn keys that can strip the socket. Ensure the receiving thread is clean and free of debris before driving. Do not over-torque stainless fasteners, as galling can occur without proper anti-seize compound on the threads. Follow applicable mechanical and equipment manufacturer specifications for final torque requirements.