Description
The Hilmor 3″ Shaft Magnetic Nut Driver (7/16″) is built for Aussie HVAC and refrigeration pros who need a secure hold, extra torque, and long-bolt clearance in one tough tool. On a Sydney rooftop in 40-degree heat or in a tight plant room in Brisbane, this driver stays grippy, accurate, and quick to use — a ripper bit of kit that saves time and cuts call-backs.
Key Features & Trade Benefits
- Magnetic Tip (Secure Hold): Keeps fasteners firmly in place so you’re not chasing dropped screws mid-job.
- Colour-Coded Size Ring (Fast ID): Grab the right size at a glance — less rummaging, more doing.
- Slip-Resistant Grip + Wrench Flats (More Torque): Crank confidently with a spanner on stubborn fixings without chewing the head.
- Hollow 3″ Shaft (Long Bolt Capable): Swallows deep bolts for brackets, fan cowls, and service panels — no mucking about.
- Chrome-Vanadium Steel (Trade Tough): Built to cop jobsite punishment; chrome-plated to resist corrosion near coastal installs.
Why This Product Matters
We’ve all been there: balanced on a ladder, one hand on the unit, the other trying to start a fastener… then plink — it drops into the return. Fair dinkum frustrating. The Hilmor’s strong magnet and deep hollow shaft stop the slip-and-drop drama, so you finish quicker and neater. If you service split systems, heat pumps, or cold rooms across humid coastal sites, this improves speed and reduces comeback jobs — simple as that.
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Pro Tip
For seized or corroded fixings on outdoor condensers, seat the driver fully, then use the wrench flats with a spanner to add controlled torque — you’ll break the corrosion without rounding the hex. She’ll be right.
Compatibility & Use Cases
- Fits standard 7/16″ hex fasteners on HVAC/R equipment (service panels, brackets, motor mounts).
- Suitable for systems charged with R32, R410A, R134a and more (general mechanical fasteners, not refrigerant fittings).
- Ideal for roof installs, wall brackets, and condenser frames where long bolts are common.
Safety note: This is not an insulated tool. For electrical work, follow live-work precautions per Safe Work Australia and applicable AS/NZS guidance.
What’s Included
- 1 × Hilmor 3″ Shaft Magnetic Nut Driver — 7/16″ hollow hex
Specifications
| Brand Name | Hilmor |
| Item Name | Nut Driver |
| Type | 3″ Shaft Magnetic Nut Driver |
| Drive Size | 7/16″ |
| Drive Type | Hexagonal |
| Material | Chrome-Vanadium Steel |
| Finish | Chrome-Plated |
| Shank Type | Hollow (deep shaft) |
| Handle Type | Slip-Resistant Grip with Wrench Flats |
| Handle Material | Rubber |
| Overall Shaft Length | 3″ (approx. 76 mm) |
Warranty & Returns
Backed by a 12-month trade warranty against defects in materials and workmanship. If it arrives faulty or fails under normal trade use, we’ll repair, replace, or refund — no worries. See our Shipping & Returns for details.
FAQs
Is the magnetic tip strong enough for stainless fasteners?
Yes — it will hold most stainless hardware. Note that magnetic attraction is naturally reduced on some stainless grades. For awkward angles, start the thread with two hands, then finish normally.
Can I use this with a cordless drill?
This is a manual nut driver. If you prefer powered use, check our Hilmor Fast Connect Magnetic Nut Driver Set for drill-friendly bits and quick swaps.
Is it insulated for live electrical work?
No. This tool is not insulated. Always isolate circuits and follow Safe Work Australia guidance and your site SWMS before work.
Related Products
- Hilmor 1-1/2″ Shaft Magnetic Nut Driver
- Hilmor 18″ Shaft Magnetic Nut Driver — 5/16″
- Hilmor 6″ Shaft Magnetic Nut Driver — 2-Piece Set
- Hilmor 1937911 Fast Connect Magnetic Nut Driver Set
Explore more: HVAC Hand Tools | Hilmor Tools Collection | Ratchet Wrenches
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