Milwaukee® 48-32-2391 3/8" Threaded Rod Nut Runner – High-Speed 1/4" Hex Shank Nut Driver for All-Thread Hanging and Strut Channel Installations

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SKU:
MIA48322391
UPC:
045242332663
MPN:
48-32-2391
Availability:
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Weight:
0.0000 LBS
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  • Milwaukee 48-32-2391 3/8 inch threaded rod nut runner with impact driver shank for fast nut installation.
  • Milwaukee 48-32-2391 3/8 inch threaded rod nut runner feature diagram showing the open design, impact-rated shank and installation features.
  • Milwaukee 48-32-2391 threaded rod nut runner used with an impact driver for faster installation of nuts on 3/8 inch threaded rod.
  • Front view of Milwaukee 48-32-2391 3/8 inch threaded rod nut runner showing the open rod clearance design.
  • Milwaukee 48-32-2391 3/8 inch threaded rod nut runner designed for use with compatible impact drivers.
  • Milwaukee 48-32-2391 3/8 inch threaded rod nut runner in use with an impact driver for installing nuts on threaded rod.
MSRP: $66.99
Now: $55.38
Was: $69.99
— You save $11.61
  • ✔️ Extreme Speed: Instantly drives nuts up to 9X faster than manual hand spinning to supercharge trapeze and strut rack assembly. ✔️ Shock-Absorbing Design: Built-in ShockZone absorbs peak torque to prevent bit breakage.
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Description

Milwaukee 48-32-2391 3/8″ Threaded Rod Nut Runner

Rapid All-Thread Nut Installation. Universal 1/4" Quick-Change Hex Shank. Optimized Internal Stepped Socket Profile.

The Milwaukee® 48-32-2391 3/8" Threaded Rod Nut Runner brings rapid installation speed, effortless overhead mechanical fastening, and high-efficiency productivity directly to your commercial electrical layout, fire protection grid, or mechanical HVAC duct hanger setup. Purpose-built to eliminate the tedious forearm fatigue of manually hand-spinning hex nuts onto long runs of all-thread rod, the slow speeds of standard deep-well sockets that bottom out, and the stripped rod threads caused by improper driving tools, this specialized commercial trade driver establishes a reliable jobsite standard. It equips mechanical contractors, commercial electricians, pipefitters, and sprinkler installers with a high-velocity fastening asset explicitly optimized to run 3/8" hex nuts and washers up long threaded rods, hang trapeze strut racks, suspend pipe systems, and secure ductwork assemblies rapidly.

Optimized internal clearance and robust alloy durability serve as the structural framework for this specialized all-thread accessory. Featuring a 1/4" quick-change hex shank, the tool drops directly into standard impact drivers or drill/drivers for instant, high-RPM power transmission. The interior socket is engineered with a specialized hollow pass-through drive profile that engages standard 3/8" hex nuts while allowing the 3/8"-16 threaded rod to feed freely through the tool. This continuous clearance lets you drive nuts several feet up a rod in seconds without stopping. Manufactured from heat-treated, impact-rated alloy steel, this nut runner withstands high rotational speeds and jobsite abuse while preventing burrs and preserving the threads on your hanging hardware.

Why the Milwaukee® 48-32-2391 3/8" Threaded Rod Nut Runner Leads the Mechanical Bay:

  • High-Speed Threaded Rod Driving: Spins 3/8" hex nuts effortlessly up long rods in seconds, cutting overhead installation times significantly.
  • Hollow Pass-Through Design: Allows the threaded rod to pass through the center of the tool without bottoming out like standard sockets.
  • 1/4" Quick-Change Hex Shank: Compatible with standard 1/4" hex impact drivers, drills, and quick-change extensions for fast setup.
  • Heat-Treated Alloy Steel Core: Forged for high durability and long service life during demanding commercial framing and strut hanging shifts.
  • Thread-Preserving Internal Geometry: Drives nuts securely without deforming or marring the delicate threads on your structural hanging rods.

Specifications

Threaded Rod Runner Metric Technical Specification Details
Model SKU Part Number 48-32-2391
Manufacturer Brand Line Milwaukee® Tool (Threaded Rod Accessories)
Target Fastener Size Standard 3/8" Hex Nuts (Fits Standard 3/8"-16 Hardware)
Internal Drive Clearance Pass-Through Design for 3/8" Diameter All-Thread Rod
Drive Shank Size & Type 1/4" Universal Quick-Change Hex Shank
Material Composition Heat-Treated High-Strength Alloy Steel
Impact Duty Rating Engineered for High-Speed Drills and 1/4" Impact Drivers
Finish / Corrosion Shield Black Oxide Protective Coating
Primary Trade Applications Strut Trapeze Racks, Cable Trays, HVAC Ducting, Conduit Hangers

Frequently Asked Questions

+ How is a threaded rod nut runner different from a standard deep socket?
A standard deep-well socket has a closed or shallow rear wall that bottoms out against the end of the threaded rod after only an inch or two. The Milwaukee 48-32-2391 features a hollow pass-through body that lets the 3/8" rod pass continuously through the tool, allowing you to run hex nuts feet into the center of a long drop rod without hitting a dead end.
+ Can this tool be used with standard 1/4" impact drivers?
Yes. The tool features a 1/4" universal quick-change hex shank that locks directly into standard impact drivers, cordless drills, and right-angle attachments. While it is built to withstand high rotational speeds, running it on standard drill mode or controlled impact speeds provides the smoothest nut placement.
+ Will using this nut runner damage or strip the threads on the rod?
No. The internal socket is machined to precise tolerances to grip the exterior flats of the 3/8" hex nut while leaving generous clearance around the rod itself. This prevents the tool from binding against or cross-threading the external threads of your all-thread rod during high-speed runs.
+ Can this be used to install washers along with the nuts?
Yes, you can easily slide a flat washer or split-lock washer onto the rod ahead of the nut runner. As the tool spins the nut up the rod, it pushes the washer along with it to the final fastening point against your strut channel or hanger bracket.
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Product Specifications

category_bullets:
• Milwaukee SHOCKWAVE 3/8" Threaded Rod Nut Runner Core: Impact-duty accessory drives nuts up to 9X faster than hand spinning, featuring an optimized ShockZone and split-socket design. • 3/8" Threaded Rod. • Impact Duty.
selling_points:
✔️ Extreme Speed: Instantly drives nuts up to 9X faster than manual hand spinning to supercharge trapeze and strut rack assembly. ✔️ Shock-Absorbing Design: Built-in ShockZone absorbs peak torque to prevent bit breakage.
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