Value Collection R57001189 Hex Head Cap Screw 5/8-18

Product Description

The VALUE COLLECTION R57001189 is a fully threaded hex head cap screw sized 5/8-18 x 1-1/2 inches, manufactured from 18-8 stainless steel with a bright, uncoated finish. It follows the Unified National Fine (UNF) thread standard, providing a tighter thread pitch suited to applications where vibration resistance and precise clamping are priorities. The 5/8-18 designation indicates a 5/8-inch nominal diameter with 18 threads per inch. At 0.2 pounds, this fastener is lightweight yet carries the corrosion resistance expected from 18-8 stainless steel. Tradespeople across HVAC, plumbing, electrical, and mechanical work rely on hex head cap screws for secure bolted connections in equipment panels, brackets, and structural assemblies.

This screw is suited for general mechanical and trade-service applications where a fine-thread stainless fastener is required. It is appropriate for residential and light commercial installations involving equipment mounting, pipe hangers, bracket assemblies, and similar bolted connections. The fully threaded shank maximizes thread engagement across the full 1-1/2-inch length under the head, making it well suited to thinner material stacks or applications requiring adjustable engagement depth. The bright, uncoated finish is acceptable for indoor service environments and moderately corrosive conditions common in mechanical rooms and utility spaces.

Key Features

• 18-8 stainless steel construction provides solid corrosion resistance for mechanical and utility environments
• Fully threaded shank along the entire 1-1/2-inch length under the head for maximum thread engagement
• 5/8-18 UNF thread profile delivers finer pitch and greater vibration resistance than coarse-thread equivalents
• Bright, uncoated finish — no plating to chip, flake, or contaminate mating surfaces
• Hex head drive accepts standard hex wrenches and sockets for quick installation and removal

Compatibility

Designed as a standard Inch-system UNF hex head cap screw. Compatible with any application calling for a 5/8-18 x 1-1/2-inch fully threaded fastener in 18-8 stainless steel per standard UNF thread specifications.

Installation Notes

Install using a properly sized hex wrench or socket to avoid rounding the hex head. Power down or de-energize any equipment before servicing bolted assemblies. When fastening into stainless steel or aluminum, apply a suitable anti-seize compound to prevent galling, which is a common issue with stainless fasteners under high torque. Follow applicable mechanical codes and equipment manufacturer guidelines for fastener torque requirements specific to the assembly.