Hillman Fasteners 200141 Hex Cap Screw 3/8-16 X 2-1/2 in 50 Pack

Product Description

The HILLMAN FASTENERS 200141 is a Grade 5 hex cap screw in a 3/8-16 x 2-1/2 inch configuration, sold in a 50-pack box. Manufactured from heat treated steel with coarse thread, this fastener delivers the tensile strength required for structural and mechanical assemblies in HVAC, plumbing, electrical, and general trade applications. The 3/8-16 coarse thread pitch provides reliable engagement in standard tapped holes and nuts, while the heat treatment process raises proof load and yield strength above ungraded fasteners. Installers and maintenance technicians reach for Grade 5 hex cap screws when connections require a predictable, verifiable strength rating under load.

These hex cap screws are suited for a wide range of commercial and residential trade applications. Common uses include equipment mounting, structural bracketing, ductwork support assemblies, panel attachment, and mechanical equipment anchoring. The 2.5-inch length accommodates moderate material stack-ups typical of equipment frames, unistrut assemblies, and structural steel connections. The 50-pack quantity is practical for service vans and job-site inventory where multiple fasteners of the same size are consumed in a single installation or repair.

Key Features

• Grade 5 heat treated steel construction for elevated proof load and yield strength
• 3/8-16 coarse thread for broad compatibility with standard nuts, inserts, and tapped holes
• 2.5-inch length suits moderate stack-up assemblies in equipment mounting and structural bracketing
• Hex cap head accepts standard 9/16-inch wrenches and sockets for fast installation
• 50-pack quantity reduces reorder frequency on high-volume fastener jobs
• Packaged in a box format for organized storage in tool bags and parts bins

Compatibility

Designed as a standard Grade 5 hex cap screw compatible with any 3/8-16 threaded nut, insert, or tapped hole conforming to Unified National Coarse thread specifications.

Installation Notes

Installation is performed by licensed or qualified tradespeople using a 9/16-inch wrench or socket and ratchet. Follow applicable mechanical codes and equipment manufacturer torque guidelines when fastening structural or load-bearing connections. Inspect mating threads for damage or contamination before assembly. Do not mix Grade 5 fasteners with higher-grade nuts in critical structural applications without engineering review.