Stewart Fastener MDB14 Magnetic Nut Driver 7/16 in

Product Description

The STEWART FASTENER MDB14 is a 7/16-inch magnetic nut driver designed for fast, single-handed fastener driving in tight trade work environments. The magnetic tip retains hex-head fasteners and sheet metal screws during placement, reducing dropped hardware in confined spaces like electrical panels, HVAC cabinets, and plumbing access points. The 2-9/16-inch blade length provides enough reach for standard panel fasteners without excessive overhang. This tool is a standard-issue hand driver for electricians, HVAC technicians, and plumbers working with 7/16-inch hex fasteners in daily service and installation tasks.

The MDB14 is suited for residential and light commercial applications where a 7/16-inch hex drive is required. Common use cases include driving sheet metal screws on duct connections, securing electrical box knockouts, fastening equipment panels, and general service work where a powered driver is unnecessary or impractical. The short blade profile keeps it maneuverable in equipment bays and inside control boxes.

Key Features

• 7/16-inch hex drive fits standard sheet metal screws and hex-head fasteners common in HVAC and electrical work
• Magnetic tip holds fasteners securely during placement in hard-to-reach areas
• 2-9/16-inch blade length balances reach and maneuverability in confined spaces
• Manual hand driver requires no power source, suitable for precision or low-torque applications

Compatibility

Designed for general use with 7/16-inch hex-head fasteners and sheet metal screws standard in HVAC, electrical, and plumbing trade applications.

Installation Notes

A licensed electrician, HVAC technician, or plumber should de-energize equipment and shut off any relevant systems before opening panels or access covers where this driver will be used. Apply steady, straight pressure along the fastener axis to avoid cam-out or fastener damage. Magnetic nut drivers are hand tools and should not be used in a drill or power driver chuck unless the tool is specifically rated for that use.

Technical Specifications

• Drive Size: 7/16 inches
• Blade Length: 2-9/16 inches
• Tip Type: Magnetic
• UPC: 662352210959

Standard Information

• Brand: STEWART FASTENER
• Manufacturer Part Number: MDB14