Value Collection R88448966 Hex Head Cap Screw 7/8-9 X 12 in

Product Description

The VALUE COLLECTION R88448966 is a partially threaded hex head cap screw designed for heavy-duty fastening applications in industrial, mechanical, and structural assemblies. Sized at 7/8-9 UNC (7/8 inch diameter, 9 threads per inch) with a 12 inch length under head, this fastener provides substantial grip length for thick-stack or long-reach connections. Constructed from 18-8 stainless steel with an uncoated finish, it delivers solid corrosion resistance without surface treatments. Weighing 0.22 pounds, it is suited for installations where both strength and material compatibility with stainless hardware are required.

This cap screw is used across a range of trade and industrial settings including HVAC equipment mounting, plumbing infrastructure, structural steel fabrication, pump and motor assemblies, and general mechanical construction. The partially threaded shank provides a smooth bearing surface in the grip zone, which is preferred in applications where shear load distribution or precise clamping without thread engagement through the full joint is needed. Licensed tradespeople, millwrights, and mechanical contractors typically specify this fastener where stainless steel is called out by the design or corrosion environment.

Key Features

• 7/8-9 UNC thread specification for high-load fastening in standard inch-series hardware
• 12 inch length under head accommodates thick-stack or deep-reach assemblies
• 18-8 stainless steel construction provides corrosion resistance in wet or chemically active environments
• Partially threaded shank allows a clean grip zone for shear-load and precise clamping applications
• Uncoated finish maintains dimensional accuracy and is compatible with standard stainless nuts and washers

Compatibility

Designed as an OEM-style replacement or standard-specification fastener for assemblies requiring a 7/8-9 UNC hex head cap screw in 18-8 stainless steel with a 12 inch length under head.

Installation Notes

Installation is typically performed by licensed tradespeople or qualified mechanical contractors using a standard hex wrench or impact tool sized for a 7/8-9 fastener. Verify thread engagement depth and ensure mating hardware is compatible stainless steel or an approved dissimilar metal to avoid galvanic corrosion. Always follow applicable ASME or ASTM fastener standards and project specifications when selecting torque requirements. Do not cross-thread; run the fastener in by hand before applying torque.