Value Collection R57001293 Hex Head Cap Screw 18-8 Ss

Product Description

The VALUE COLLECTION R57001293 is a partially threaded hex head cap screw in 1-1/4-7 UNC thread size with a 4.5-inch length under head. Constructed from 18-8 stainless steel and left uncoated, this fastener delivers corrosion resistance suited for wet, chemical-exposed, or outdoor environments. The hex drive accepts standard wrenches and impact sockets. Partial threading provides a smooth shank section that resists lateral shear loading, making it appropriate for bolted joints where clamping force and alignment both matter. Licensed trades including plumbers, HVAC installers, and pipefitters commonly use fasteners of this type when assembling equipment frames, flanges, pipe hangers, and mechanical supports.

This screw suits general industrial and mechanical assembly applications across residential and light commercial trade work. The UNC thread form is the dominant coarse-thread standard in inch-based fastener applications, making it compatible with most standard hex nuts, flange nuts, and tapped holes machined to 1-1/4-7 UNC specification. Typical install scenarios include equipment base-plate mounting, structural bracketing, and flanged joint assembly where stainless steel is specified for corrosion or food-safety reasons. No specific model or equipment compatibility was provided by the manufacturer for this part number.

Key Features

• 18-8 stainless steel construction provides corrosion resistance in wet and chemically active environments
• Partial threading preserves a smooth shank for shear-load resistance and precise joint alignment
• UNC thread standard ensures broad compatibility with inch-system nuts and tapped components
• Uncoated finish eliminates coating thickness variability for close-tolerance applications
• Hex head drive accepts standard open-end, box, and socket wrenches as well as impact tools

Compatibility

Designed as a standard inch-series hex head cap screw for use with 1-1/4-7 UNC-tapped holes, hex nuts, and flanged fastener assemblies in mechanical, plumbing, and HVAC structural applications.

Installation Notes

Installation is typically performed by a licensed mechanic, plumber, or HVAC technician using a properly sized wrench or impact socket. Power down or de-energize any associated equipment and relieve system pressure before removing or replacing structural fasteners. Verify thread engagement depth and inspect mating tapped holes or nuts for damage before final assembly. Follow applicable building and mechanical codes for torque and fastener-grade requirements specific to the application.