Value Collection 011377P Hex Socket Cap Screw 1/2-13 Unc

Product Description

The VALUE COLLECTION 011377P is a hex socket cap screw designed for high-strength fastening applications in mechanical assemblies, tooling, and structural connections. Sized at 1/2-13 UNC with a 4-inch length under head, this fastener is partially threaded and driven with a 3/8-inch hex key. It is manufactured from alloy steel with a black oxide finish for corrosion resistance in moderate environments. The ASME/ANSI B18.3 and ASTM A574 standards govern its dimensional and mechanical properties, making it a specification-grade fastener suited for maintenance shops, industrial facilities, and fabrication environments where torque capacity and dimensional consistency matter.

This screw is used in applications requiring a recessed drive fastener that sits flush or below the surface of the mated material. Partial threading allows the smooth shank to bear shear loads, making it appropriate for close-tolerance holes in machine components, jigs, fixtures, and equipment frames. Machinists, millwrights, and maintenance technicians commonly install this type of fastener across general industrial and manufacturing environments.

Key Features

• 1/2-13 UNC thread form for broad compatibility with standard tapped holes
• 4-inch length under head with partial threading for shear-load capacity in close-tolerance bores
• 3/8-inch hex drive for use with standard hex keys and socket drivers
• Alloy steel construction meets ASTM A574 mechanical requirements
• Black oxide finish provides mild corrosion resistance and reduces light reflection
• Conforms to ASME/ANSI B18.3 dimensional standards

Compatibility

Designed as a specification-grade replacement or stocking fastener for standard 1/2-13 UNC tapped holes requiring an ASME/ANSI B18.3 hex socket cap screw with a 4-inch grip length.

Installation Notes

Install using a calibrated 3/8-inch hex key or socket driver; do not use worn or undersized drivers that may strip the socket recess. Verify that the tapped hole depth and thread engagement meet applicable engineering requirements before final assembly. Lubricate threads as required by the assembly specification to achieve accurate clamp load from applied torque. Follow applicable facility or equipment service procedures when replacing fasteners in load-bearing or safety-critical assemblies.