Bowmalloy BOW36448 Hex Head Cap Screw 5/8-18 Grade 9

Product Description

The BOWMALLOY BOW36448 is a fully threaded hex head cap screw engineered to Grade 9 steel specifications, finished with a zinc-plated clear chromate coating for corrosion resistance. Sized at 5/8-18 thread pitch with a 1-3/4 inch length under the head, this fastener is suited for high-strength bolted connections in demanding mechanical and structural assemblies. The Bowma-Guard finish provides a protective barrier against oxidation and environmental exposure. Licensed trades and industrial maintenance technicians working with heavy equipment, HVAC structural frames, pump mounts, or similar steel assemblies will find this fastener a reliable fit for critical joints.

This cap screw is applicable across a wide range of trade and industrial settings including HVAC equipment mounting, mechanical system frames, plumbing support structures, and electrical enclosure assemblies where a high-strength inch-series fastener is required. The 5/8-18 UNF thread is a fine-pitch designation, making it appropriate for applications where precise torque control and vibration resistance matter. It is sold in package quantities of 25, with a minimum order of 1 package.

Key Features

• Grade 9 steel construction for high tensile strength in demanding applications
• Fully threaded 5/8-18 UNF fine-pitch thread for improved vibration resistance
• 1-3/4 inch length under head for standard through-bolt and tapped-hole applications
• Bowma-Guard zinc-plated clear chromate finish for corrosion protection
• Packaged in quantities of 25 to support job-lot purchasing
• Inch system of measurement, UNSPSC code 31161501

Compatibility

Designed as a standard inch-series hex head cap screw for use in any assembly requiring a 5/8-18 UNF fully threaded fastener with Grade 9 strength rating.

Installation Notes

Installation should be performed by a qualified mechanic or trades professional familiar with high-strength fastener torque requirements. Always consult the equipment manufacturer torque specification table before final tightening. Ensure mating threads are clean and free of debris before assembly. Grade 9 fasteners should not be substituted with lower-grade hardware in load-bearing or safety-critical connections.