Value Collection 33670 Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 33670 is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, structural connections, and industrial equipment. Featuring a 1/2-13 UNC thread size and a 3/8-inch hex drive socket, this screw is partially threaded with 3 inches of length under the head. It is manufactured from alloy steel with a black oxide coating that provides moderate corrosion resistance and reduces light reflection in service environments. Machinists, millwrights, maintenance technicians, and general contractors typically install this fastener wherever a recessed drive profile and high clamp load are required.

This cap screw is suited for use in structural steel fabrication, machine frames, fixtures, jigs, and industrial maintenance applications. The partially threaded shank provides a bearing surface in the clearance hole, which is useful for precision alignment in bolted joint assemblies. It conforms to ASME/ANSI B18.3 and ASTM A574 standards, making it appropriate for demanding mechanical and structural applications where fastener grade and dimensional consistency matter.

Key Features

• 1/2-13 UNC thread for broad compatibility with standard inch-series tapped holes
• Partially threaded shank provides shear load capacity and alignment in clearance holes
• 3/8-inch hex socket drive for use with Allen keys and hex bit drivers
• Alloy steel construction meets ASTM A574 high-strength 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 requiring a 1/2-13 UNC partially threaded fastener with a 3/8-inch hex drive.

Installation Notes

Install using a 3/8-inch hex key or socket bit driver rated for the required torque. Ensure the mating tapped hole is clean and free of debris before driving. Follow applicable torque specifications from your engineering documentation or applicable ASME standards for ASTM A574 alloy steel fasteners. Do not exceed the fastener's rated clamp load, and avoid cross-threading during installation.