Bowmalloy BOW36187 Hex Head Cap Screw 3/4-10 X 7-1/2 in Grade 9

Product Description

The BOWMALLOY BOW36187 is a Grade 9 steel hex head cap screw with a 3/4-10 thread size and a 7-1/2 inch length under head. It features partial threading and a Bowma-Guard zinc-plated clear chromate finish that provides corrosion resistance in demanding service environments. This fastener is designed for high-strength structural and mechanical assemblies where standard Grade 5 or Grade 8 hardware is insufficient. Electricians, millwrights, pipefitters, and mechanical contractors use Grade 9 cap screws when torque loads and joint integrity requirements exceed what lower-grade fasteners can reliably handle.

This cap screw is suited for heavy industrial, commercial, and trade applications including equipment mounting, structural steel connections, and large mechanical assemblies. The partial threading leaves a smooth shank section under the head, which is standard for longer fasteners and helps maintain shear strength across the joint interface. It is sold in packages of 5, making it practical for small-quantity repairs and replacement jobs on the job site or in the shop.

Key Features

• Grade 9 steel construction for high-strength fastening beyond Grade 8 performance levels
• 3/4-10 UNC thread size for compatibility with standard 3/4-inch tapped holes and nuts
• 7-1/2 inch length under head accommodates deep stack-ups and thick structural members
• Partial threading preserves shank shear strength across the grip length
• Bowma-Guard zinc-plated clear chromate finish provides corrosion protection in indoor and moderately exposed environments
• Inch measurement system; UNSPSC Code 31161501

Compatibility

Designed as a high-strength replacement or service fastener for applications requiring 3/4-10 UNC hex head cap screws in Grade 9 steel with partial threading.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or licensed trade professional familiar with high-strength fastener torque requirements. Always consult applicable engineering specifications or torque tables for Grade 9 fasteners before final tightening. De-energize and lock out all equipment before working in fastener locations near electrical or moving components. Do not substitute a lower-grade fastener in any joint designed and specified for Grade 9 hardware.