Stewart Fastener J2512MRCZ 1/4-20 X 3/4 Zinc Machine Screws 100

Product Description

The STEWART FASTENER J2512MRCZ is a zinc-plated round head combination drive machine screw sized 1/4-20 x 3/4 inches, sold in a jar of 100. The 1/4-20 thread designation indicates a 1/4-inch nominal diameter with 20 threads per inch (UNC coarse thread). The round head profile provides a low-profile finished appearance, and the combination drive accepts both slotted and Phillips drivers, giving installers flexibility on the job. The zinc plating offers basic corrosion resistance suitable for general indoor mechanical and electrical assembly applications. These are a standard hardware item stocked in trade shops for fastening brackets, panels, and equipment components.

These machine screws are appropriate for residential and light commercial trade applications including HVAC equipment assembly, electrical panel work, plumbing fixture mounting, and general mechanical fastening tasks. The jar-of-100 packaging is designed for bench stock or service van inventory, making it practical for technicians who need a reliable quantity of a common fastener size on hand without counting individual pieces.

Key Features

• 1/4-20 UNC coarse thread for broad fastener compatibility
• 3/4-inch length suits standard panel and bracket thickness applications
• Round head profile delivers a clean, finished appearance at the fastener seat
• Combination drive accepts slotted or Phillips drivers for installation flexibility
• Zinc plating provides corrosion resistance for indoor mechanical assemblies
• Jar of 100 supports bench stock and service van replenishment

Compatibility

Designed as a standard 1/4-20 x 3/4-inch round head combination drive machine screw suitable for general mechanical, electrical, and HVAC equipment fastening where this thread size and length are specified.

Installation Notes

Installation is performed by electricians, HVAC technicians, plumbers, and general mechanical tradespeople using standard slotted or Phillips screwdrivers or power drivers with appropriate bit tips. Always de-energize electrical equipment and follow applicable NEC or IFGC lockout procedures before fastening near live components. Do not overtighten into thin sheet metal or soft substrates, as the coarse thread can strip if torque is not controlled. Verify thread engagement depth is adequate for the mating material before final tightening.

Technical Specifications

• Thread Size: 1/4-20 UNC
• Length: 3/4 inches
• Head Style: Round Head
• Drive Type: Combination (Slotted and Phillips)
• Finish: Zinc Plated
• Quantity: 100 per jar
• UPC: 662352111621

Standard Information

• Brand: STEWART FASTENER
• Manufacturer Part Number: J2512MRCZ