Value Collection R52001018 Hex Head Cap Screw 1-1/4-7 X 6 in

Product Description

The VALUE COLLECTION R52001018 is a partially threaded hex head cap screw designed for general-purpose industrial and mechanical fastening applications. Sized at 1-1/4-7 UNC thread with a 6-inch length under head, this fastener is manufactured from Grade 2 steel and finished with a zinc plating for basic corrosion resistance. It meets ASME B18.2.1 and SAE J429 dimensional and mechanical standards. The hex drive head accepts standard hex wrenches and impact sockets. At 2.58 pounds per unit, this is a substantial fastener suited for structural connections, equipment assembly, and heavy-duty framing work where Grade 2 steel meets load requirements.

This cap screw is used in residential and commercial construction, industrial equipment assembly, agricultural machinery, and general fabrication. The partial threading allows for clamping force to be concentrated through the unthreaded shank, making it well suited for bolted joints where the shank passes through clearance holes. Machinists, millwrights, ironworkers, and maintenance technicians commonly install this class of fastener in high-load structural connections.

Key Features

• 1-1/4-7 UNC thread form for broad compatibility with standard inch-series nuts and tapped holes
• 6-inch length under head accommodates thick stock and multi-layer assemblies
• Partial threading keeps the shank smooth through clearance holes, concentrating clamping load
• Grade 2 steel construction meets SAE J429 mechanical property requirements
• Zinc plating provides baseline corrosion protection for indoor and moderate-exposure environments
• Conforms to ASME B18.2.1 for head dimensions and tolerances

Compatibility

Designed for use with standard 1-1/4-7 UNC inch-series nuts and tapped holes conforming to ASME and SAE specifications for Grade 2 steel hex head cap screws.

Installation Notes

Install using a properly sized hex wrench or impact socket rated for the fastener size. Ensure mating nut or tapped hole is the same thread class and specification before assembly. Follow applicable torque guidelines for Grade 2 fasteners as specified by engineering drawings or relevant standards. Do not use this fastener in applications requiring Grade 5 or Grade 8 minimum mechanical properties without engineering review.