Value Collection R57001288 Hex Head Cap Screw 18-8 Ss

Product Description

The VALUE COLLECTION R57001288 is a partially threaded hex head cap screw designed for general fastening applications across industrial, mechanical, and construction trades. Sized at 1-8 thread (1 inch diameter, 8 threads per inch UNC) with a 7.5-inch length under head, this fastener is manufactured from 18-8 stainless steel and left uncoated, providing inherent corrosion resistance without surface treatment. The UNC thread standard ensures broad tool and hardware compatibility. Installers working in corrosive environments, food-service equipment, or marine-adjacent applications will find the 18-8 alloy grade appropriate for resistance to rust and oxidation under typical service conditions.

This hex head cap screw is suited for structural assemblies, equipment mounting, and through-bolting applications where a large-diameter, long-length fastener is required. Partial threading allows the unthreaded shank to bear shear loads in fitted holes, which is a common requirement in machinery frames, pipe supports, and heavy equipment assembly. It is installed by licensed trades and general contractors using standard hex drive tooling.

Key Features

• 1-8 UNC thread profile for high-strength clamping in large-diameter applications
• 7.5-inch length under head accommodates thick material stacks and through-bolt assemblies
• Partially threaded shank handles shear loads in fitted or close-tolerance holes
• 18-8 stainless steel construction provides corrosion resistance without additional coating
• Uncoated finish is compatible with stainless nuts and washers without galvanic mismatch concerns
• Inch measurement system with UNC thread standard for broad hardware compatibility

Compatibility

Designed as a standard UNC inch-series hex head cap screw compatible with 1-8 UNC hex nuts, flat washers, and lock washers in stainless steel or compatible alloys.

Installation Notes

This fastener is installed using a standard hex wrench or socket driver sized for the 1-inch hex head. Always confirm mating nut thread specification matches 1-8 UNC before assembly. When installing in structural or pressure-bearing applications, consult applicable mechanical codes and torque specifications from the equipment manufacturer. Use appropriate anti-seize compound on stainless fasteners to prevent galling during installation and future removal.