Minerallac 39005D 5/16" x 1-3/4" Magnetic Hex Driver Bit for #10-12 Screws

Minerallac 39005D 5/16" x 1-3/4" Magnetic Hex Driver Bit for #10-12 Screws

The Minerallac 39005D is a 5/16" x 1-3/4" hex driver bit designed to drive #10-12 hex-head screws quickly, accurately, and without slipping. A built-in magnetic tip grips the screw head so it stays seated on the bit through starts, angled drives, and overhead work, cutting down on dropped fasteners and wasted motion on the jobsite. At 1-3/4" long, the 39005D reaches into device boxes, panel interiors, and other tight electrical enclosures where a standard screwdriver or shorter bit can't maneuver. It's a straightforward, purpose-built accessory for electricians, panel builders, and maintenance technicians who regularly drive #10-12 hex-head hardware with a power drill or impact driver, whether on new construction rough-in or service and repair calls.

Key Features

• Hex Socket Size: 5/16" hex socket sized to match #10-12 hex-head screws for a snug, slip-resistant fit that reduces cam-out and rounded fastener heads.
• Overall Length: 1-3/4" bit length provides extra reach into recessed panels, junction boxes, and deep device enclosures without needing an extension.
• Magnetic Tip: A built-in magnet holds the screw securely on the bit tip, freeing a hand to position devices, straps, or covers while driving.
• Screw Compatibility: Purpose-sized for #10-12 hex-head screws commonly used to secure electrical devices, straps, brackets, and panel hardware.
• Power Tool Ready: Standard hex shank fits common drill chucks and impact driver quick-change holders, so techs can swap bits quickly between tasks.
• Job-Site Durability: Compact, single-piece construction is sized to ride easily in a tool pouch or drill case for fast access on rough-in and service calls.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Typical Applications

• Electrical Device, Receptacle, and Switch Installation
• Panelboard, Load Center, and Enclosure Assembly
• Strap and Bracket Fastening on Conduit and Raceway Systems
• Service, Repair, and Maintenance Calls Requiring Fast Bit Changes
• Commercial and Residential Wiring Projects
• General Electrical Contractor and MRO Tool Kits

Why Minerallac?

Minerallac supplies the driver bits, fasteners, and small hardware that electrical contractors depend on to keep projects moving without interruption. The 39005D pairs a precisely sized 5/16" hex socket with a magnetic tip so #10-12 hex-head screws seat correctly and stay in place through the drive, reducing stripped heads, cam-out, and dropped hardware on the ladder or in the panel. It's built as a dependable, no-nonsense accessory for professionals who need consistent, repeatable results job after job on commercial and residential electrical work.