Value Collection 592413PR Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION 592413PR is a hex socket cap screw designed for secure fastening in applications requiring a flush or recessed drive. Featuring a 1/2-20 UNF thread size and a 2.5-inch length under head, this fastener is partially threaded and driven with a 3/8-inch hex key. Constructed from 18-8 austenitic stainless steel (ASTM Grade A2), it offers solid corrosion resistance without a coating. Manufactured to ASME/ANSI B18.3 and ASTM F837 standards, this screw is a reliable choice for maintenance, fabrication, and assembly work across mechanical and industrial environments.

This cap screw is used in applications where a recessed hex drive is required for torque application in tight spaces or where a low-profile fastener head is necessary. Suitable for general mechanical assemblies, equipment repair, and structural fastening in both shop and field environments. The stainless steel construction makes it appropriate for environments where mild corrosion resistance is needed, including wet or outdoor-adjacent installations.

Key Features

• Thread size 1/2-20 UNF for fine-thread engagement and vibration resistance
• 2.5-inch length under head with partial threading for precise clamping
• 3/8-inch hex socket drive for use with standard Allen keys or hex bit drivers
• 18-8 austenitic stainless steel, ASTM Grade A2, for corrosion resistance
• Bright/uncoated finish maintains dimensional accuracy without added buildup
• Meets ASME/ANSI B18.3 and ASTM F837 fastener standards

Compatibility

Designed as an OEM-style replacement or stock fastener for mechanical assemblies requiring a 1/2-20 UNF hex socket cap screw with a 2.5-inch length under head.

Installation Notes

Installation is performed by machinists, maintenance technicians, or mechanical contractors using a 3/8-inch hex key or Allen bit driver. Ensure the mating threads are clean and free of debris before installation. Avoid cross-threading by starting the fastener by hand before applying drive torque. Follow applicable ASME or equipment manufacturer guidelines for fastener torque and preload in the specific assembly.