Bowmalloy BOW36521 Hex Head Cap Screw Grade 9 1-14x4

Product Description

The BOWMALLOY BOW36521 is a Grade 9 steel hex head cap screw with a 1-14 thread size and a 4-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 built to inch-system specifications and is suited for high-strength bolted joint applications where superior tensile and proof load ratings are required. Licensed trades and industrial maintenance professionals select Grade 9 fasteners when Grade 8 hardware falls short of application load requirements.

This cap screw is used in heavy equipment assembly, structural fabrication, agricultural machinery, and industrial maintenance applications that demand a high-strength inch-series fastener. The partial thread configuration provides a smooth shank section for shear-load-bearing joints, making it appropriate for applications where the bolt passes through a clearance hole before engaging a threaded bore or nut. It is compatible with standard inch-series hex nuts and washers matching the 1-14 thread specification.

Key Features

• Grade 9 steel construction exceeds Grade 8 in tensile and proof load strength
• 1-14 thread size in the inch measurement system
• 4-inch length under head for deep-reach bolted joint applications
• Partial threading provides a smooth shank for shear-load-bearing joints
• Bowma-Guard zinc-plated clear chromate finish for corrosion resistance
• Standard hex head accepts common 6-point drive sockets and wrenches

Compatibility

Designed for use with standard inch-series 1-14 hex nuts, heavy hex nuts, and flat washers in high-strength bolted joint assemblies.

Installation Notes

Installation should be performed by a qualified mechanic or millwright following applicable structural or equipment manufacturer torque specifications for Grade 9 inch-series fasteners. Always verify thread engagement depth before final tightening. Inspect the mating threads and bearing surfaces for damage or contamination before assembly. Do not substitute a lower-grade fastener if Grade 9 hardware is specified by the equipment manufacturer.