Value Collection -40235-2 Hex Socket Cap Screw 5/16-24 Unf

Product Description

The VALUE COLLECTION -40235-2 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, fixtures, and equipment. It features a 5/16-24 UNF thread, a 3-inch length under head, and a 1/4-inch hex drive. The screw is partially threaded, fabricated from alloy steel, and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection. It meets ASME/ANSI B18.3 dimensional standards and ASTM A574 mechanical property requirements. This fastener is suited for machinists, millwrights, maintenance technicians, and fabricators working on precision assemblies that require a socket-drive cap screw.

This screw is used in industrial and commercial maintenance, machinery fabrication, and structural fastening applications where a fine-thread, socket-head cap screw is specified. The 5/16-24 UNF fine thread pitch provides greater tensile strength and finer thread engagement compared to coarse-thread variants, making it well suited for applications with thin materials or vibration-prone environments. The black oxide finish is common in tooling, jig, and fixture builds. Sold in a minimum order quantity of 25 pieces.

Key Features

• 5/16-24 UNF fine thread for higher tensile load capacity and reduced loosening under vibration
• 3-inch length under head with partial threading for strong shank grip in clearance holes
• 1/4-inch hex socket drive compatible with standard Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 mechanical property requirements
• Black oxide finish for 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 for use in any application specifying a 5/16-24 UNF partially threaded socket head cap screw with a 3-inch length under head.

Installation Notes

Installation is performed using a 1/4-inch hex key or socket bit driver. Verify mating thread condition and hole depth before installation. De-energize or lock out any equipment before fastener replacement or assembly work, following applicable OSHA lockout/tagout procedures. Do not substitute a coarse-thread fastener in a fine-thread tapped hole.