Bowmalloy BOW36353 Hex Head Cap Screw 3/8-24 X 7/8 in Grade 9

Product Description

The BOWMALLOY BOW36353 is a fully threaded hex head cap screw built to Grade 9 steel specifications, designed for high-strength fastening applications in industrial, mechanical, and trade assemblies. Sized at 3/8-24 (UNF fine thread) with a 7/8-inch length under the head, this fastener delivers reliable clamping force in tight-tolerance joints where fine thread engagement is critical. The Bowma-Guard zinc-plated clear chromate finish provides corrosion resistance suitable for general indoor and light outdoor service. Tradespeople, millwrights, and mechanical contractors reach for Grade 9 fasteners when standard Grade 5 or Grade 8 hardware is not sufficient for the load or vibration demands of the application.

This screw is suited for use in structural assemblies, equipment mounting, and mechanical systems that require fine-thread UNF fasteners in the 3/8-inch diameter class. The fully threaded shank maximizes thread engagement across the full grip length, making it a practical choice for thinner material stacks and applications where a partially threaded shank would leave insufficient thread contact. It is sold in packages of 100, making it appropriate for shop stock, fleet maintenance operations, and production assembly environments.

Key Features

• Grade 9 steel construction for high-strength, high-load fastening beyond Grade 8 ratings
• 3/8-24 UNF fine thread profile for precise thread engagement and strong clamping force
• Fully threaded shank along the entire 7/8-inch length under the head
• Bowma-Guard zinc-plated clear chromate finish for corrosion resistance
• Hex head drive for standard socket, wrench, or impact installation
• Packaged in quantities of 100 for shop stock and production use

Compatibility

Designed as an OEM-style and replacement fastener for mechanical assemblies requiring 3/8-24 UNF hex head cap screws in Grade 9 steel with a 7/8-inch length under head.

Installation Notes

Installation is performed by qualified mechanics, millwrights, or trade technicians using standard hex sockets or open-end wrenches sized for a 3/8-inch hex head cap screw. Always consult the equipment manufacturer torque specifications for the specific joint material and clamp load requirements before final tightening. Ensure mating threads are clean and free of debris before installation. Follow applicable fastener and equipment service standards for the assembly being serviced.