Buy Adjustable Wrenches Online in Australia
Common Questions about Adjustable Wrenches
What is an adjustable wrench?
An adjustable wrench — also called an adjustable spanner or shifting spanner — is a single open-end spanner with a movable jaw. A worm screw adjusts the jaw width to fit a range of nut and bolt sizes, eliminating the need to carry a full set of fixed-size spanners on the job.
What sizes do adjustable wrenches come in?
Adjustable wrenches are sized by overall length — 150, 200, 250, 300 and 375 millimetre lengths are the workshop standards, equivalent to six, eight, ten, twelve and fifteen inch in imperial. Longer wrenches reach larger jaw sizes. A 200 millimetre wrench covers around 24 millimetres jaw opening.
Should I use an adjustable wrench or a fixed spanner?
Fixed spanners give a tighter, more reliable grip on the nut — preferred for high-torque or critical work. Adjustable wrenches are convenient when you do not have the exact size or face a range of fasteners. The compromise is more slop in the jaw, which can round nuts under heavy load.
Why does my adjustable wrench round off nuts?
Slack in the jaw lets the wrench rock on the nut, rounding the corners. Causes include worn jaw, loose worm screw, jaw not tightened firmly against the flats, mixing imperial wrench on metric nuts, or undersized wrench for the torque. Use a six-point socket or fixed spanner instead.
What is the best brand of adjustable wrench?
Bahco is the original adjustable wrench manufacturer and remains the workshop benchmark for quality and accuracy. Stahlwille, Trax and Maxigear are stocked alternatives across price points. AIMS Industrial stocks adjustable wrenches from these brands across the common workshop length range, with stainless options for marine use.
Adjustable Wrench (Shifter) Selection — Quick Reference
Adjustable wrenches (shifters / crescent wrenches) — ADJUSTABLE JAW for variable fastener sizes. Workshop + plumbing + automotive + maintenance. Single tool for range of sizes vs individual spanners. Match length + jaw capacity + Bahco / Channellock quality.
| Adjustable Wrench Type | Best For |
|---|---|
| Standard Adjustable Shifter | Workshop general |
| Bahco Ergo Premium | Workshop quality + ergonomic |
| Wide-Mouth (Larger Fastener) | Plumbing + larger nuts |
| Pipe Wrench (Self-Adjusting) | Toothed jaw for pipe |
| Compact / Pocket Size | Workshop quick access |
| Long-Handle (300mm+) | Higher leverage |
| Phosphate / Chrome Finish | Corrosion + finish |
Critical: Don't OVER-LEVERAGE — jaw slips + rounds off fastener. For TIGHT bolts use proper-sized wrench. Brands: Bahco, Channellock, Stahlwille. Companion: spanners, wrenches, combination wrenches, hand tools.
Adjustable Wrenches — Shifters & Adjustable Spanners
An adjustable wrench (shifter or adjustable spanner) is the most versatile hand wrench in any toolkit — one tool covers a wide range of fastener sizes. AIMS Industrial sells adjustable wrenches from Bahco, covering compact 150mm pocket spanners through to heavy 600mm wrenches for industrial maintenance and plumbing applications.
Adjustable Wrenches We Stock
- Bahco Adjustable Wrenches: Bahco adjustable wrenches (Ergo series) feature a slim-head profile for access in confined spaces and a rust-resistant chrome vanadium jaw — available in 150mm, 200mm, 250mm, 300mm, 375mm, and 450mm lengths to suit a full range of fastener sizes.
- Heavy-Duty 600mm Shifters: Large adjustable wrenches (600mm+) for pipeline fittings, large hex fasteners, and industrial maintenance tasks requiring high torque. Chrome vanadium construction ensures the jaw does not spread under load.
- Compact & Pocket Wrenches: 150mm–200mm adjustable wrenches for electricians, HVAC technicians, and service workers who need a compact adjustable spanner in a tool belt or service bag. Slim-jaw profiles access recessed fasteners on switchboard and panel work.
Selecting the Right Adjustable Wrench
- Length and Jaw Opening: Wrench length determines both the fastener size range and the torque available. Match the wrench jaw opening to the largest fastener you expect to turn — using a wrench at the limit of its jaw range reduces jaw contact area and risks rounding the fastener.
- Chrome Vanadium vs Standard Steel: Bahco adjustable wrenches are manufactured from chrome vanadium (CrV) alloy steel — providing higher strength and toughness than plain carbon steel equivalents. The chrome plated finish resists corrosion in workshop and plumbing environments.
- Slim-Head Design: Bahco Ergo series adjustable wrenches have a slim-head profile that reduces the approach angle to hex fasteners in close quarters — an important consideration for plumbing and HVAC service work where pipes and fittings are tightly packed.
- Backlash and Jaw Fit: Quality adjustable wrenches have minimal jaw backlash — loose jaw adjustment allows the wrench to rock on the fastener, rounding flats. Inspect the jaw adjustment mechanism before purchase: there should be minimal free play when the jaw is set to a fastener size.
Australian Business, Local Supply: As a proudly Australian business since 1988, we stock locally and work with trusted local Australian manufacturers and distributors to ensure fast, reliable supply.
Expert Support: Need help buying the right product for your application? Contact our team for application-specific advice or request a quote.
See our full hand tools range including combination wrenches, ratcheting spanners, and open-end wrenches.