Value Collection R57001083 Hex Socket Cap Screw 1/2-20 Unf

Product Description

The VALUE COLLECTION R57001083 is a hex socket cap screw with a 1/2-20 UNF thread and a 3-1/2 inch length under head. It is driven with a 3/8 inch hex key and constructed from 18-8 stainless steel with a bright, uncoated finish. This fastener is used wherever a high-strength, corrosion-resistant socket cap screw is required in mechanical assemblies, equipment frames, and industrial fixtures. Installers in plumbing, HVAC, electrical, and general mechanical trades rely on this type of fastener for secure, flush-profile clamping in tight clearance applications.

This screw is suited for fine-thread applications requiring controlled clamping force and resistance to vibration loosening. The 1/2-20 UNF thread pitch provides greater thread engagement per inch compared to coarse-thread equivalents, making it a common choice in precision assemblies, pump housings, manifold flanges, and equipment panels where thread stripping resistance matters. The 18-8 stainless steel construction makes it appropriate for environments with moisture exposure or mild corrosive conditions.

Key Features

• 1/2-20 UNF fine thread for increased thread engagement and vibration resistance
• 3-1/2 inch length under head for deep clamping reach in thick material stacks
• 3/8 inch hex socket drive for use with standard hex keys and socket drivers
• 18-8 stainless steel construction provides corrosion resistance in wet or humid environments
• Bright, uncoated finish maintains dimensional tolerances without added coating buildup

Compatibility

Designed as an OEM-style replacement or standard-stock hex socket cap screw for mechanical assemblies requiring a 1/2-20 UNF fine-thread fastener with a 3/8 inch hex drive.

Installation Notes

Installation is performed with a 3/8 inch hex key or Allen-style socket driver. Always confirm thread engagement and seat the fastener into a properly tapped hole before applying final torque. Power down or de-energize any equipment before accessing fastener locations on electrical enclosures or mechanical assemblies. Follow applicable equipment manufacturer torque specifications and relevant mechanical or building codes for the application.