Bowmalloy 36464 Hex Head Cap Screw 5/8-11 X 7 in Grade 9

Product Description

The BOWMALLOY 36464 is a partially threaded hex head cap screw engineered for high-strength bolted connections in industrial and structural applications. It is manufactured from Grade 9 alloy steel, which delivers greater tensile strength than Grade 5 or Grade 8 fasteners, making it suitable for demanding mechanical assemblies. The screw measures 5/8-11 thread size with a 7-inch length under the head and carries a clear zinc chromate finish for corrosion resistance. Licensed fastener technicians, millwrights, and maintenance mechanics are the primary installers of this fastener class.

This cap screw is used in heavy-duty equipment assemblies, structural steel connections, and industrial machinery where elevated proof load and tensile strength are required. The inch-series 5/8-11 thread pitch is a standard UNC coarse thread, compatible with standard 5/8-11 nuts and tapped holes per ASME B18.2.1. Partial threading allows the unthreaded shank to serve as a bearing surface in close-tolerance bores, which is common in pivot points and clevis assemblies.

Key Features

• Grade 9 alloy steel construction provides higher tensile and proof load ratings than standard Grade 8 fasteners
• 5/8-11 UNC coarse thread for broad compatibility with standard nuts and tapped holes
• 7-inch length under head accommodates thick stack assemblies and long-grip applications
• Partial threading allows the smooth shank to function as a locating or bearing surface
• Clear zinc chromate finish provides a baseline level of corrosion protection in moderate environments

Compatibility

Designed as a direct-fit replacement or new-installation fastener for any application requiring a 5/8-11 UNC hex head cap screw with a 7-inch grip length in Grade 9 alloy steel.

Installation Notes

Installation should be performed by a qualified mechanic or millwright following applicable torque specifications from the equipment manufacturer or a recognized fastener standard such as ASME or SAE. Always clean and inspect mating threads before installation, and apply thread lubricant or anti-seize only if specified by the equipment OEM, as lubrication affects achieved clamp load at a given torque. De-energize, lock out, and tag out any machinery before replacing structural fasteners. Do not reuse fasteners that show thread damage, stretching, or corrosion.