Irwin 3548521C Magnetic Nutsetter, 3/8" Hex Drive, Lobular Design

Irwin 3548521C Magnetic Nutsetter, 3/8" Hex Drive

The Irwin 3548521C Magnetic Nutsetter is a 3/8" hex drive tool built with a lobular design that drives sheet metal screws and other hexagonal head fasteners from the sides of the fastener rather than forcing the corners to turn. This socket body measures 9/16" in diameter and is engineered to reduce stripping damage while providing extra clearance on the corners of the fastener where paint build-up can occur. Sold as a single unit, this nutsetter is a practical addition to any professional's driver bit and fastening tool collection for sheet metal and construction work.

Key Features

• Trade Size: 3/8" nutsetter size with a 9/16" socket body diameter for a secure fit on hexagonal head fasteners.
• Lobular Design: Drives the fastener on the sides instead of forcing the corners to turn, which reduces stripping damage during repeated use.
• Fastener Clearance: Provides more clearance on the corners of the fastener where paint build-up can occur, helping maintain a clean, positive drive engagement.
• Application: Designed for use with sheet metal screws and other hexagonal head fasteners commonly found on jobsites.
• Magnetic Retention: Magnetic design helps hold the fastener in place during driving for faster, more accurate starts.
• Pack Quantity: Sold individually, one nutsetter per pack.

Technical Specifications

• Socket Body Diameter: 9/16"
• Size: 3/8"
• Item #: 3548521C
• Pack Qty: 1

Typical Applications

• Sheet Metal Fabrication and Installation
• HVAC Ductwork Assembly
• Roofing and Siding Fastener Driving
• General Construction and Maintenance Work
• Driver Bit and Fastening Tool Kits

Why Irwin?

Irwin's lobular design nutsetters are engineered to minimize fastener stripping and extend tool life, giving tradespeople a dependable option for driving sheet metal screws and hexagonal head fasteners. With precise 9/16" socket body sizing and added clearance around fastener corners, this 3/8" magnetic nutsetter delivers consistent, reliable performance for professional fastening applications.