Value Collection 33666 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 33666 is a fully threaded hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, industrial equipment, and structural connections. It features a 1/2-13 UNC thread size with a 2-inch length under head, driven by a 3/8-inch hex socket drive. Constructed from alloy steel with a black oxide finish, this fastener delivers solid corrosion resistance and surface hardness. It meets ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for applications where dimensional accuracy and mechanical strength are required. Licensed trades and maintenance professionals rely on this screw type for reliable clamping force in precision-fit joints.

This socket cap screw is suited for use in manufacturing, maintenance, and repair environments where a low-profile, high-torque fastener is needed. The hex drive socket head allows installation in recessed or tight clearance areas where a standard hex head wrench cannot reach. Typical applications include machine frames, fixture plates, jigs, pump housings, and industrial equipment panels. The fully threaded shank engages the full depth of a tapped hole, which is particularly useful in shallow or through-hole configurations.

Key Features

• 1/2-13 UNC thread for broad compatibility with standard tapped holes and nuts
• 2-inch length under head with full threading along the entire shank
• 3/8-inch hex socket drive for use with standard Allen keys and hex bit drivers
• Alloy steel construction provides high tensile strength for demanding fastening applications
• Black oxide finish offers mild corrosion resistance and reduces light reflection in precision environments
• Meets ASME/ANSI B18.3 and ASTM A574 fastener standards

Compatibility

Designed as an OEM-style replacement or aftermarket fastener for applications requiring a 1/2-13 UNC fully threaded socket cap screw in alloy steel. Verify thread pitch, length under head, and drive size against the existing fastener or engineering specification before installation.

Installation Notes

Installation is typically performed by machinists, millwrights, or maintenance technicians using a 3/8-inch hex key or socket bit driver. Ensure the mating tapped hole is clean, free of debris, and properly sized for 1/2-13 UNC thread engagement before driving the fastener. Do not exceed the recommended seating torque for the material being fastened, and apply thread lubricant or anti-seize compound where required by the application. Power down and de-energize any equipment before accessing fastener locations on live machinery.