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

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

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

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