Bowmalloy BOW36507 Hex Cap Screw 7/8-14 X 7 in Grade 9

Product Description

The BOWMALLOY BOW36507 is a Grade 9 steel hex head cap screw designed for high-strength fastening applications in industrial, heavy equipment, and structural assemblies. Measuring 7/8-14 (fine thread) by 7 inches in length under head, this fastener features partial threading and a Bowma-Guard zinc-plated clear chromate finish that provides corrosion resistance in demanding environments. Grade 9 designation indicates an elevated proof load and tensile strength compared to Grade 5 or Grade 8 fasteners, making it a suitable choice where joint integrity under heavy stress or vibration is required. Installation is performed by qualified mechanics, millwrights, or maintenance technicians working to published torque specifications for Grade 9 inch-series fasteners.

This cap screw is commonly used in heavy-duty mechanical assemblies including agricultural equipment, construction machinery, mining equipment, and industrial machinery where a fine-thread, high-strength fastener is specified. The 7/8-14 fine thread pitch improves clamping force and resistance to loosening in high-vibration applications. The partial threading allows for a smooth shank section that bears shear loads across the joint interface, which is typical in structural connections and clevis-style assemblies.

Key Features

• Grade 9 steel construction for elevated tensile and proof load ratings compared to standard Grade 5 or Grade 8 hardware
• 7/8-14 fine thread series for improved clamping force and vibration resistance
• 7-inch length under head with partial threading to provide a full shank for shear-bearing joints
• Bowma-Guard zinc-plated clear chromate finish for corrosion protection in exposed or moderately harsh environments
• Inch measurement system; UNSPSC Code 31161501 for procurement classification

Compatibility

Designed as a high-strength inch-series replacement or service fastener for applications requiring a 7/8-14 fine thread hex head cap screw with Grade 9 material specification and partial threading.

Installation Notes

Installation should be performed by a qualified mechanic or millwright using a calibrated torque wrench and the appropriate Grade 9 torque specification for the joint design. Always clean and inspect the mating threaded hole before installation. Do not mix Grade 9 fasteners with lower-grade nuts or threaded inserts that are not rated for the corresponding clamp load. Follow equipment OEM service documentation and applicable industry standards for fastener installation procedures.