Value Collection -33615-1 Hex Socket Cap Screw 5/16-18

Product Description

The VALUE COLLECTION -33615-1 is a 5/16-18 UNC hex socket cap screw designed for secure mechanical fastening in industrial and trade applications. Manufactured from alloy steel with a black oxide finish, it delivers corrosion resistance and a consistent torque surface. The screw is fully threaded with a 1/2-inch length under head and accepts a 1/4-inch hex drive. This fastener meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding structural and mechanical assemblies. Machinists, millwrights, and general contractors typically install this type of fastener in equipment assembly, fixture building, and structural connections.

This hex socket cap screw is used across a wide range of residential, commercial, and industrial applications where a flush or recessed fastener is required. Its fully threaded shank makes it well-suited for through-hole and tapped-hole installations in metal, machinery frames, brackets, and precision assemblies. The black oxide finish helps reduce light reflection and provides mild corrosion resistance in dry to moderately humid environments.

Key Features

• 5/16-18 UNC thread size for broad compatibility with standard tapped holes
• 1/2-inch length under head for shallow-depth fastening applications
• Fully threaded shank for maximum thread engagement
• 1/4-inch hex socket drive for use with standard hex keys and socket drivers
• Alloy steel construction meets ASTM A574 high-strength requirements
• Black oxide coating provides mild corrosion resistance and reduced surface glare

Compatibility

Designed as a standard replacement or stocking fastener for any application requiring a 5/16-18 UNC fully threaded hex socket cap screw conforming to ASME/ANSI B18.3 and ASTM A574 specifications.

Installation Notes

Installation is performed using a 1/4-inch hex key or socket driver. Verify that the mating tapped hole is clean, properly sized, and free of debris before installation. Apply thread locker or anti-seize compound as required by the application. Do not exceed the rated proof load for the fastener grade when torquing.