Value Collection 581502PR Hex Socket Cap Screw 3/8-24 Unf

Product Description

The VALUE COLLECTION 581502PR is a partially threaded hex socket cap screw designed for high-strength mechanical fastening applications. It features a 3/8-24 UNF thread form, a 5-inch length under head, and a 3/8-inch hex drive. Constructed from alloy steel with a black oxide finish, this fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding load-bearing and torque-sensitive assemblies. The black oxide coating provides moderate corrosion resistance and reduces light reflection in finished assemblies.

This cap screw is used in general mechanical, industrial, and maintenance applications where a recessed hex drive is required for flush or countersunk installation. The 3/8-24 UNF fine thread pitch offers improved thread engagement and resistance to loosening under vibration compared to coarse thread equivalents. Typical installations include machine frames, fixtures, tooling, and equipment housings. This fastener is sold individually with a minimum order quantity of 10 pieces.

Key Features

• 3/8-24 UNF fine thread for tight thread engagement and vibration resistance
• 5-inch length under head accommodates thick stack assemblies
• Partial threading leaves a smooth shank section for shear load transfer
• Alloy steel construction meets ASTM A574 high-strength socket screw standard
• Black oxide finish provides moderate corrosion protection and low reflectivity
• 3/8-inch hex drive compatible with standard hex keys and socket drivers

Compatibility

Designed as an OEM-style replacement or standard stock fastener for mechanical assemblies requiring 3/8-24 UNF socket cap screws conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is typically performed by machinists, maintenance technicians, or mechanical assemblers using a calibrated torque wrench and a 3/8-inch hex key or socket driver. Ensure the mating threaded hole is clean and free of debris before installation. Do not exceed recommended torque values for the fastener grade as specified in ASME/ANSI B18.3 tables. Apply thread lubricant or thread-locking compound only as specified for the application.