Wrenches

Wrenches and Spanners for Australian Trade and Industrial Use

Wrenches (called spanners in Australian English) are the everyday hand tools for tightening and loosening hex fasteners — the workhorses of mechanical, plumbing, electrical, automotive, and general trade work across Australia. From basic open-end wrenches through to torque-controlled drivers and adjustable shifters, the right wrench matched to the work makes the difference between fast progress and damaged fasteners. AIMS Industrial supplies a comprehensive wrench range from Bahco, Stahlwille, and Wiha, covering the styles and sizes Australian tradespeople actually need.

The major wrench types in our range

• Open end wrenches — U-shaped jaws engage two flats; fast on and off, lower torque capacity. See our open end wrenches
• Ring wrenches (box-end / socket-end) — closed ring engages all six points; higher torque capacity. See our socket end wrenches
• Combination wrenches — open end one side, ring the other in matching size; the everyday workshop choice
• Ratcheting wrenches — internal ratchet mechanism for fast driving without lifting and re-engaging. See our ratcheting spanners
• Adjustable wrenches (shifters) — single tool covering varied sizes; the trade van staple
• Pipe wrenches (Stillsons) — for gripping pipe and cylindrical components. See our plumbing tools
• Torque wrenches — for tightening fasteners to specified torque values. See our torque wrenches and screwdrivers
• Allen keys (hex keys) — for socket head fasteners
• Specialty wrenches — strap wrenches, oil filter wrenches, basin wrenches, and trade-specific tools

Choosing the right wrench

• For general workshop work — combination wrench sets cover the daily-used range of sizes
• For tight or seized fasteners — ring wrenches minimise rounding risk on stubborn bolts
• For high-volume fastening — ratcheting combination wrenches save significant time
• For varied size work — adjustable wrenches handle many sizes with one tool
• For plumbing and pipe work — pipe wrenches grip cylindrical components
• For specified-torque applications — torque wrenches for engineering, automotive, and structural work
• For electrical work — VDE-insulated wrenches certified to 1000V (mandatory for live work)

Sizing — metric and imperial

Wrench sizing matches the fastener hex size:

• Metric — 6mm through 32mm covers most general trade work; smaller and larger available
• Imperial (AF / SAE) — 1/4 inch through 1-1/4 inch for US-spec equipment and older Australian work
• Whitworth (BSW) and BS — for heritage British equipment and restoration work

Most modern Australian workshops are metric-first, but imperial wrench sets are essential for automotive (US-origin vehicles), older equipment, and imported machinery. A complete trade kit usually includes both metric and imperial.

What separates quality wrenches from cheap ones

Three things distinguish quality:

• Jaw tolerance — precision-machined jaws grip fasteners exactly; cheap jaws round off fasteners under torque
• Steel grade and hardness — chrome-vanadium or chrome-molybdenum, heat-treated correctly; cheap wrenches twist or break under load
• Finish — mirror chrome that resists corrosion; cheap finishes peel and rust within months

Quality wrenches earn back their price through years of reliable trade service. For tools used daily, the price difference between quality and budget pays back fast.

VDE-insulated for electrical work

For work near live electrical conductors, wrenches must be VDE-certified to 1000V — two-layer insulation, drop-tested, dielectric-strength tested. Don't substitute non-VDE wrenches in electrical applications. The Wiha and Stahlwille VDE ranges deliver compliant protection for trade electrical work.

Where wrenches earn their place

• Automotive workshops — engine, chassis, and service work
• Plumbing and gas fitting — pipe and fitting work
• Mechanical assembly — fabrication and equipment assembly
• Electrical trade work — VDE wrenches for live electrical work
• Industrial maintenance — equipment service and repair
• Construction and structural — bolt-up of structural connections
• General trade and DIY — wherever fastener work happens

Brands stocked at AIMS

Bahco is the trade workhorse — solid quality at sensible price, the brand most Australian tradies eventually settle on. Stahlwille and Wiha cover the precision and premium end where European-spec or particularly high-quality work is the priority. All three brands are chosen because the jaw tolerance, steel hardness, and finish quality survive years of daily trade use.

Set or singles

For most workshops, a 12-14 piece combination wrench set covers the daily-used metric range (8mm-22mm). Singles let you replace the size that's seen the most use, or build a kit to your own preference. Most trade kits end up with one base set plus singles for specialty applications.

Companion ranges at AIMS

Wrenches sit at the centre of our hand tool range — see spanners (parent category), open end wrenches, socket end wrenches, ratcheting spanners, torque wrenches, and socket extensions and adaptors for the broader range.

Need help speccing wrenches for trade, electrical, or specific work? contact our team — we'll match brand, size range, type, and certification to the work.