Value Collection -33599-9 Hex Socket Cap Screw 1/4-20

Product Description

The VALUE COLLECTION -33599-9 is a hex socket cap screw designed for mechanical fastening applications requiring a compact, high-strength connection. Sized at 1/4-20 UNC with a 3/8-inch length under head, the screw is fully threaded and driven with a 3/16-inch hex key. Constructed from alloy steel with a black oxide finish, it meets ASME/ANSI B18.3 and ASTM A574 standards, making it suitable for load-bearing and torque-critical assemblies. The black oxide coating provides a degree of corrosion resistance and reduces surface reflectivity. This fastener is installed by machinists, millwrights, and general tradespeople working in industrial and mechanical environments.

This screw is used in a wide range of mechanical assemblies where a low-profile, socket-driven cap screw is required. Common applications include machine frames, fixture plates, jigs, brackets, and equipment housings. Its fully threaded shank allows engagement along the entire length of the fastener, which is particularly useful in shallow threaded holes or thin material applications. Minimum order quantity is 50 pieces.

Key Features

• 1/4-20 UNC thread size for broad compatibility with standard tapped holes
• 3/8-inch length under head, fully threaded for maximum thread engagement
• 3/16-inch hex drive for use with standard Allen or hex key sets
• Alloy steel construction rated to ASTM A574 for high tensile strength
• Black oxide finish for mild corrosion resistance and low-glare surface
• Meets ASME/ANSI B18.3 dimensional standard

Compatibility

Designed as a standard 1/4-20 UNC hex socket cap screw suitable for use in any tapped hole or threaded insert conforming to 1/4-20 UNC thread specifications.

Installation Notes

Installation requires a 3/16-inch hex key or Allen driver. Ensure the mating thread is clean and free of debris before driving the fastener. Apply thread-locking compound or torque to specification per the equipment manufacturer's guidelines. Always use appropriate personal protective equipment when working with fasteners under load.