Value Collection 33663 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 33663 is a hex socket cap screw designed for high-strength bolted connections in industrial, mechanical, and structural applications. The fastener uses a 3/8-inch hex drive and features full threading along a 1-1/4-inch length under head in a 1/2-13 UNC thread size. Manufactured from alloy steel and finished with a black oxide coating, it provides corrosion resistance and a clean appearance. This screw meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding load applications. Machinists, millwrights, and maintenance technicians are the typical installers.

This screw is suited for general industrial assembly, machine building, and equipment maintenance where a recessed hex drive is required for flush or below-surface installation. The 1/2-13 UNC thread is a coarse-pitch designation widely used in North American manufacturing. Full threading along the length under head maximizes thread engagement in through-hole and tapped-hole configurations. The black oxide finish is common in environments where moderate corrosion protection and low light reflection are priorities.

Key Features

• 1/2-13 UNC coarse thread for broad compatibility with standard tapped holes
• Fully threaded shank for maximum thread engagement
• 3/8-inch hex socket drive for use with standard hex keys and socket tools
• Alloy steel construction for high tensile strength
• Black oxide finish provides moderate corrosion resistance
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as a standard replacement or service fastener for any application requiring a 1/2-13 UNC hex socket cap screw with a 1-1/4-inch length under head in alloy steel.

Installation Notes

Installation is performed with a 3/8-inch hex key or Allen-style socket driver. Ensure the mating tapped hole is clean and free of debris before threading. Apply appropriate thread lubricant or anti-seize compound as required by the application. Follow the relevant machinery or structural assembly specification for torque requirements, as fastener torque values are application-dependent and are not provided here.