Key Features
Overview
The Milwaukee 49-66-4567 SHOCKWAVE Impact Duty 6″ Magnetic Nut Driver Set 6PC is a 6-piece magnetic nut driver set built for impact drivers and drill drivers that need longer reach and better fastener control. This is a nut driver set designed for fastening hex-head screws and nuts in tight-access and overhead applications. Model Number: 49-66-4567. If you spend your day hanging threaded rod, driving self-tapping fasteners, or assembling brackets and light framing hardware, this set is made for that kind of work.
The big advantage here is not just that these are magnetic. Milwaukee specifically built them with an IMPACT DUTY magnet meant to resist loosening over time, which is a real issue on heavily used nut drivers. A solid magnetic hold helps keep screws in place during setup, especially when you are starting fasteners one-handed, working above shoulder height, or trying to line up hardware in cramped mechanical spaces.
The 6-inch length matters too. Short nut drivers are fine on open work, but once you are reaching past duct edges, conduit runs, strut, or brackets, extra length saves time and busted knuckles. Milwaukee calls out this extended reach for tight-access applications, and that is exactly where a set like this earns its keep. You get better access without having to stack adapters or cobble together a setup that adds wobble.
Milwaukee also built these around durability for impact use. The SHOCK ZONE is there to absorb peak torque and help prevent breakage, while the CUSTOM ALLOY76 steel is heat treated for longer service life. In plain terms, that means these are not just drill-only accessories pretending to be impact ready. They are designed to take repeated high-torque hits without becoming a disposable item after a few tough jobs.
Fit at the fastener matters just as much as strength, and Milwaukee addressed that with a chamfered edge and improved hex geometry. The benefit is better screw-head engagement and less chance of slipping or rounding off hardware. When you are running a lot of repetitive fastening, cleaner engagement means less rework, less stripped hardware, and less frustration at the end of the day.
This set is also easier to manage on the job because each nut driver has a color-coded band for quick size identification. That sounds simple, but it is one of those details that speeds things up when you are bouncing between common sizes. Instead of reading tiny size markings every time, you can grab what you need faster and keep moving.
Compatibility is straightforward. These nut drivers use a 1/4 in. shank and are designed for use with impact drivers and drill drivers. That makes them a practical fit for most common cordless fastening platforms without needing a special interface or dedicated tool body.
Who is this set for? Electricians, HVAC installers, maintenance techs, metal framing crews, and general contractors will get the most out of it. Serious DIY users who want impact-rated nut drivers with better reach will also appreciate it. If you mainly need a compact driver for occasional bench work, a shorter set may be enough. But if you work around installed hardware, overhead supports, or tight mechanical spaces, the added length and magnetic hold on this Milwaukee set make a real difference.
Keep Fasteners Started in Awkward Spots
A good magnetic nut driver does more than hold hardware. It helps you start cleanly, keep the fastener lined up, and work with more control when your other hand is busy holding material.
- IMPACT DUTY magnet is designed to prevent the magnet from loosening over time
- Magnetic hold keeps screws secure during application setup
- Chamfered edge helps the driver seat on the fastener more cleanly
Reach Hardware Without Stacking Adapters
The 6-inch body is what makes this set especially useful for mechanical and overhead work. You get into recessed areas and around obstructions without building a longer setup that can flex or slip.
- 6 in. length is built for extended reach and tight-access fastening
- Useful for overhead hardware, brackets, and confined installation points
- Designed for heavy-duty impact applications
Made for Repetitive Impact Fastening
These are meant to live in an impact driver, not just survive a few occasional runs. Milwaukee built the set to manage torque, improve fit, and hold up longer under repeated use.
- Optimized SHOCK ZONE absorbs peak torque to help prevent breakage
- CUSTOM ALLOY76 steel is heat treated for extended bit life
- Improved hex geometry helps reduce stripping at the fastener
What’s in the Box
- (1) 1/4 in. x 6 in. magnetic nut driver
- (1) 5/16 in. x 6 in. magnetic nut driver
- (1) 3/8 in. x 6 in. magnetic nut driver
- (1) 7/16 in. x 6 in. magnetic nut driver
- (1) 1/2 in. x 6 in. magnetic nut driver
- (1) 9/16 in. x 6 in. magnetic nut driver
Key Specifications
| Piece Count | 6 |
|---|---|
| Length | 6 in. |
| Shank Size | 1/4 in. |
| Tip Sizes | 1/4 in., 5/16 in., 3/8 in., 7/16 in., 1/2 in., 9/16 in. |
| Material | CUSTOM ALLOY76 steel |
| Application Type | Heavy-duty impact fastening |
| Color Coding | Yes |
| Weight | 1.398 lb |
Compatibility
Built For
Pro Tip
If you are bouncing between common hex sizes on hangers, strut, or sheet metal hardware, learn the color bands before the job starts. It sounds minor, but it speeds up swaps and cuts down on grabbing the wrong size when you are working overhead.
Warranty & Support
Tool Nut’s Take
Milwaukee 49-66-4567 SHOCKWAVE Impact Duty 6″ Magnetic Nut Driver Set 6PC Gets the Basics Right
This is the kind of nut driver set that earns a permanent spot in the bag because the long reach, solid magnet, and impact-ready build actually solve real jobsite problems.
- Who it’s for: Anyone running hex-head fasteners with an impact driver or drill driver, especially HVAC, electrical, maintenance, and general install crews.
- Why it stands out: The 6-inch length helps in tight spots, the magnet is built for long-term holding power, and the SHOCK ZONE setup is made for repeated impact use.
- Worth knowing: This is a dedicated fastening set, not a general bit assortment, and Milwaukee lists it with no warranty. If you need long-reach magnetic nut drivers often, though, this is a smart buy.
Common Questions
- Can this set be used with an impact driver? Yes. Milwaukee states these nut drivers are designed for heavy-duty impact applications and for use with impact drivers and drill drivers.
- What shank size do these nut drivers use? The set uses a 1/4 in. shank.
- What sizes are included? The set includes 1/4 in., 5/16 in., 3/8 in., 7/16 in., 1/2 in., and 9/16 in. nut drivers.
- Are the nut drivers color coded? Yes. Milwaukee includes color-coded bands to make size selection faster.
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