Adjustable Wrenches · 4001
100-600 mm Adjustable Wrench
Industrial Monkey Wrench for Oversized Fasteners, Sold Individually
- Fast US dispatch from our Fort Worth, Texas warehouse
- Genuine Teng Tools — professional-grade, designed in Sweden
- Secure checkout — encrypted payment, trusted providers
- Backed by guarantee — built to last a working lifetime
Why this one
Worm-gear adjustment
The worm-gear mechanism dials the opening to the fastener and locks in place, keeping the parallel jaw faces tight on the flats.
Lengths 100 to 600 mm
Sold individually from 100 mm up to 600 mm, so you can match the size to small fasteners or oversized hardware.
Jaw scale, flush jaw
An integral measurement scale sits on the jaw, and the moving jaw does not protrude, which allows use in confined spaces.
Hole for securing at height
A hole in the handle lets you secure the tool when working at height.
Chrome vanadium, black phosphate
High grade chrome vanadium steel with a black phosphate finish.
Read the full description
Some fasteners are simply too large for a standard toolkit. This Teng Tools 600 mm jaw wrench measures 600 mm (23.6 in) and weighs 3009 g, putting the jaw capacity and handle leverage of an industrial-grade tool in your hands when the job demands it.
The worm-gear mechanism dials the opening to the fastener and locks in place, keeping the parallel jaw faces tight on the flats even under the heavy torque this handle length can generate. That precision matters on oversized hex hardware where a sloppy fit chews corners and turns a ten-minute task into an extraction project.
At this length the tool doubles as a serious lever. Seized flanges, structural anchor nuts, and heavy-equipment mounting bolts all yield to smooth, controlled effort applied through a handle long enough to keep your body mechanics working in your favor instead of against you.
Teng Tools sells this as an individual piece because tradesmen who need an extra-large wrench usually need one specific size, not a kit. Buy the length the job calls for, pair it with other Teng Tools pieces as your work demands, and keep your investment focused on tools that earn their place in the truck or the shop.
Overall length: 600 mm (23.6 in). Weight: 3009 g.
Get it in a set
This adjustable wrenches also comes in these 2 sets, with the tools that go with it.
Specifications
| Type | Spanners & Wrenches |
|---|---|
| Category | Adjustable Wrenches |
| Part number | 4001 |
Data sheet
Full details from Teng Tools. Download PDF
Lifetime warranty
Send a photo and your order number. Same-day shipping on replacements.
Ships from Texas
From our Fort Worth warehouse.
Questions?
Call (817) 767-3392.
Shipping
Free shipping on orders over $99. Orders are stocked, picked and shipped from our warehouse in Fort Worth, Texas — orders placed on business days ship same-day wherever possible.
Lifetime warranty
Teng Tools hand tools are backed by a lifetime warranty against manufacturing defects. Screwdriver bits and socket bits are consumables and are guaranteed to meet dimensional standards. Torque wrenches and air tools can be serviced and recalibrated on request — contact us to arrange it.
Returns
Not right for the job? Contact us within 30 days of delivery and we'll sort out a return or exchange. Tools must be unused and in their original packaging. Warranty claims are handled separately — a defective tool is our problem, not yours.
Why Teng Tools?
Swedish Design Since 1985
Trusted in 30+ countries. Designed in Sweden, built to ISO and DIN standards.
Shipped Fast from Texas
US warehouse in Fort Worth, so orders move fast. TAA approved for government and defense.
Lifetime Warranty
Something goes wrong? Send a photo and your order number — same-day shipping on replacements.
The Devil Is in the Detail
Satin-finish wrenches, through-blade screwdrivers, heavy-gauge storage — built to last.

