Value Collection 40239 Hex Socket Cap Screw 3/8-24 Unf

Product Description

The VALUE COLLECTION 40239 is a fully threaded hex socket cap screw designed for precision fastening applications in mechanical, industrial, and trade assembly work. Sized at 3/8-24 UNF with a 1-1/4 inch length under head, this screw uses a 5/16 inch hex drive and is manufactured from alloy steel with a black oxide finish. The black oxide coating provides mild corrosion resistance and reduces light reflection on exposed fastener heads. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for structural and load-bearing applications where a high-strength cap screw is required.

This hex socket cap screw is used in a wide range of applications including machinery assembly, equipment repair, and general industrial fabrication. The 3/8-24 UNF fine thread pitch provides stronger thread engagement and better resistance to loosening under vibration compared to coarse thread equivalents. Typical installation scenarios include securing panels, brackets, and mechanical components where a flush or recessed fastener head is required. This part is sold individually with a minimum order quantity of 50 pieces.

Key Features

• 3/8-24 UNF fine thread for strong engagement and vibration resistance
• Fully threaded along entire 1-1/4 inch length under head
• 5/16 inch hex drive for standard Allen wrench or hex bit installation
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish for mild corrosion protection and low-glare appearance
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard-dimension replacement or new-installation cap screw for any application requiring a 3/8-24 UNF fully threaded hex socket fastener conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is performed using a 5/16 inch hex key or Allen-style driver bit. Ensure the mating threaded hole is clean and free of debris before driving. Do not exceed the rated torque range for the fastener grade and material being joined. Apply thread lubricant or thread-locking compound as required by the application specification.