Value Collection R57001284 Hex Head Cap Screw 7/8-9

Product Description

The VALUE COLLECTION R57001284 is a partially threaded hex head cap screw designed for general-purpose fastening in industrial, mechanical, and trade applications. Sized at 7/8-9 thread with a 3-3/4 inch length under the head, this fastener is manufactured from 18-8 stainless steel with a bright, uncoated finish. The UNC thread standard ensures compatibility with standard inch-system tapped holes and nuts. Weighing approximately 0.5 pounds, this screw is suited for structural connections where corrosion resistance is required without surface coating. Machinists, pipefitters, millwrights, and maintenance technicians commonly specify this grade and size for moderate-strength, corrosion-resistant assemblies.

This hex head cap screw is commonly used in plumbing equipment mounting, HVAC mechanical frames, pump housings, and general industrial maintenance. The 18-8 stainless steel construction makes it appropriate for installations exposed to moisture, mild chemicals, or outdoor environments. The partially threaded shank provides a bearing surface useful for applications requiring controlled clamping load or alignment. It installs with standard 7/8-9 UNC hardware and fits a wide range of flanged, bracketed, and bolted connections in mechanical trade work.

Key Features

• 7/8-9 UNC thread provides compatibility with standard inch-system fastener hardware
• 3-3/4 inch length under head accommodates moderate-depth fastening applications
• 18-8 stainless steel construction offers corrosion resistance in wet or chemically exposed environments
• Partially threaded shank supports controlled clamping and alignment in bolted joints
• Bright, uncoated finish maintains dimensional tolerances and is ready for installation as received

Compatibility

Designed for use in any application requiring a 7/8-9 UNC inch-series hex head cap screw with 18-8 stainless steel construction and partial threading.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with fastener torque requirements for the specific joint material and application. Power down or depressurize any equipment before servicing fastened connections. Use a properly sized hex wrench or socket to avoid rounding the fastener head. Do not mix stainless steel fasteners with dissimilar metals in submerged or high-galvanic environments without appropriate isolation.