Value Collection 451103PS Hex Head Cap Screw 1/2-13

Product Description

The VALUE COLLECTION 451103PS is a hex head cap screw designed for heavy-duty fastening applications in mechanical, structural, and industrial assemblies. It features a 1/2-13 UNC thread size with a 7-1/2 inch length measured under the head, and partial threading along the shank. Manufactured from Grade 8 steel with a bright uncoated finish, this fastener meets the dimensional and mechanical requirements of ASME B18.2.1. Its high tensile strength makes it suitable for demanding bolted connections where a standard Grade 5 fastener would be insufficient. The 3/4-inch hex drive is compatible with standard open-end, box-end, and socket wrenches used in trade and maintenance work.

This cap screw is commonly used in structural steel connections, heavy equipment assembly, machinery mounting, and industrial maintenance applications. Partial threading leaves a smooth shank section that provides shear strength and precise clamping in close-tolerance joint designs. It is appropriate for both original equipment assembly and field repair work performed by millwrights, maintenance technicians, pipefitters, and general mechanical contractors.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1/2-13 UNC thread form for broad compatibility with standard nuts and tapped holes
• 7-1/2 inch length under head accommodates thick stack assemblies
• Partial threading provides a smooth shank for shear-loaded joints
• Bright uncoated finish suitable for use with added lubrication or field-applied coatings
• Meets ASME B18.2.1 dimensional standard

Compatibility

Designed for use with 1/2-13 UNC standard hex nuts, heavy hex nuts, and appropriately tapped structural components per ASME B18.2.1 specifications.

Installation Notes

Power down and de-energize any equipment before replacing fasteners in electrical or mechanical enclosures. Use a calibrated torque wrench and apply the appropriate torque specification for Grade 8 fasteners at 1/2-13 per the applicable engineering or equipment standard — do not estimate. Apply thread lubricant or anti-seize as required by the joint specification. Follow applicable codes including ASME and AISC guidelines for structural bolted connections.