Bowmalloy 36613 Hex Nut 3/8-24 Grade 9 Zinc-plated

Product Description

The BOWMALLOY 36613 is a Grade 9 steel hex nut with a 3/8-24 thread size and a zinc-plated clear chromate finish. Built to ANSI/ASME B18.2.2 standards, this nut delivers high-strength fastening performance in demanding applications. The clear chromate coating provides corrosion resistance while maintaining a clean appearance. With a hardness rating of 26-36 HRC, the 36613 is suited for high-stress assemblies where standard Grade 5 or Grade 8 hardware falls short. Electricians, mechanical contractors, and industrial maintenance technicians regularly specify Grade 9 fasteners for critical connections subject to vibration and elevated load.

This hex nut is used in industrial, mechanical, and structural fastening applications requiring a fine-thread 3/8-24 profile. The fine thread pitch provides greater tensile strength and better resistance to loosening under vibration compared to coarse-thread equivalents. It is well suited for use in equipment assembly, machinery maintenance, and trade installations where high-torque, high-strength fastening is required. The right-hand thread orientation follows standard installation practice, making it compatible with conventional tooling and procedures.

Key Features

• Grade 9 steel construction with 26-36 HRC hardness for high-strength fastening
• 3/8-24 fine right-hand thread for superior vibration resistance
• Zinc-plated clear chromate finish for corrosion protection
• 9/16 inch across flats - fits standard 9/16-inch wrenches and sockets
• Meets ANSI/ASME B18.2.2 fastener standard
• Sold in quantities of 100 per package (MOQ 1 package)

Compatibility

Designed for use with 3/8-24 fine-thread bolts and studs in industrial, mechanical, and trade assembly applications requiring Grade 9 strength hardware.

Installation Notes

Installation should be performed by qualified mechanical or trade personnel familiar with high-strength fastener applications. Always de-energize or shut down the system being serviced before replacing or torquing fasteners. Use a calibrated torque wrench appropriate for Grade 9 hardware and follow the equipment manufacturer's torque specifications. Do not mix thread grades or pitches, as mismatched fasteners can cause joint failure.