Value Collection -40246-1 Hex Socket Cap Screw 3/8-24

Product Description

The VALUE COLLECTION -40246-1 is a partially threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, machinery, and structural components. It features a 3/8-24 UNF thread size with a 3-inch length under head and is driven by a 5/16-inch hex key. Constructed from alloy steel with a black oxide finish, this fastener offers corrosion resistance and reduced light reflection. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it a reliable choice for demanding industrial and trade applications where tensile strength and dimensional precision are required.

This cap screw is suited for use in equipment assembly, jig and fixture construction, machine tool mounting, and general mechanical fastening where a recessed drive and high clamp load are needed. The 3/8-24 UNF fine thread pitch provides greater thread engagement and improved resistance to loosening under vibration compared to coarse thread alternatives. Sold individually with a minimum order quantity of 25 units, it is appropriate for shop stock, maintenance inventory, and production line use.

Key Features

• 3/8-24 UNF fine thread for high clamping force and vibration resistance
• 3-inch length under head for deep grip in thicker assemblies
• 5/16-inch hex drive for use with standard Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide finish provides mild corrosion resistance and low-glare appearance
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a standard ASME/ANSI B18.3 hex socket cap screw suitable for mechanical assemblies, machine components, and fixtures requiring a 3/8-24 UNF partially threaded fastener.

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 installation. Apply thread lubricant or thread-locking compound as required by the application and applicable mechanical standards. Do not exceed the torque rating specified by the assembly engineer or equipment manufacturer for this fastener size and grade.