Stewart Fastener J3724MRCZ 3/8-16 X 1-1/2 Machine Screw 50pk

Product Description

The STEWART FASTENER J3724MRCZ is a 3/8-16 x 1-1/2 inch round head machine screw sold in a package of 50. The round head profile provides a wide bearing surface and a clean finished appearance, making it suitable for general mechanical assembly, equipment fabrication, and panel fastening. The 3/8-16 thread designation indicates a 3/8-inch nominal diameter with 16 threads per inch, a coarse unified national thread commonly used in structural and mechanical connections across HVAC, plumbing, electrical, and general trade applications. Installers working in light fabrication or equipment mounting will find this a standard go-to fastener for through-bolt and tapped-hole assemblies.

These round head machine screws are appropriate for use in a wide range of trade and light industrial settings, including HVAC equipment assembly, electrical enclosure fabrication, plumbing bracket mounting, and general equipment installation. The 50-piece package format suits service technicians and small contractors who need a job-ready quantity without bulk ordering. The coarse 3/8-16 thread engages efficiently in tapped steel, aluminum, and other common substrate materials encountered in mechanical trades.

Key Features

• Round head profile provides wide bearing surface and clean finished look
• 3/8-16 coarse thread for reliable engagement in tapped metal substrates
• 1-1/2 inch grip length suits standard panel and bracket fastening tasks
• Package of 50 pieces sized for service and small contractor use
• Unified national coarse thread compatible with standard 3/8-16 nuts and tapped holes

Compatibility

Designed for use with standard 3/8-16 tapped holes and hex nuts in general mechanical, HVAC, electrical, and plumbing assembly applications.

Installation Notes

Installation of machine screws should be performed by a qualified tradesperson using appropriate hand or power tools set to avoid over-torquing, which can strip threads or crack mounting surfaces. Always ensure the mating thread is clean and free of debris before driving the fastener. De-energize and lock out any equipment before performing fastener work on live panels or energized assemblies in accordance with applicable NEC and OSHA lockout/tagout requirements.