Bahco BAH9031RUS Ergo Big-Mouth Adjustable Wrench 8 Inch
- 8 inches long, 0.76 pounds
- Adjustable big-mouth wrench, SAE (inch)
- Alloy steel and rubber construction
- Black phosphate finish
- Not rated as non-sparking
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
An eight inch adjustable wrench with a wide jaw and a rubber-covered handle in black phosphate. The listing gives no jaw capacity, so check the largest fastener you plan to turn.
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ASIN: B0012Y2EUCModel: BAH9031RUSCategory: Wrenches
Overview
Bahco builds this big-mouth adjustable wrench in alloy steel with rubber on the handle. The jaw adjusts to size, the finish is black phosphate, and the measurement standard is SAE.
A wide-mouth design suits larger nuts and pipe fittings than a standard crescent. The black phosphate finish resists rust in a toolbox. The listing does not give the maximum jaw opening.
Who it's for
A mechanic or homeowner who turns various nut sizes gets one adjustable tool with a rubber handle. Anyone working around flammable gases needs a non-sparking tool, and anyone who needs a stated jaw opening should check elsewhere.
Pros and cons
- Black phosphate finish
- Alloy steel body
- Light for its length
- Jaw capacity not listed
- SAE scale only
- Rubber handle can wear
Performance notes
The adjustable jaw locks on a fastener by a threaded mechanism, so grip depends on adjusting it snug. Alloy steel resists stretching under torque. The handle covering adds comfort but not strength.
Specifications
| Brand | BAHCO |
|---|---|
| Model | BAH9031RUS |
| Dimensions & fit | |
| Item Length | 8 incheslower than 51% of 338 wrenches |
| Item weight | 0.76 pounds |
| Wrench Length Style | Standard |
| Construction & materials | |
| Material Type | Alloy steel, rubber |
| Color | Black |
| Finish Types | Black phosphate |
| Included components | |
| Package Quantity | 1 |
| Other details | |
| Measurement Standard | SAE (inch) |
| Head Style | Box end |
| End Style | Adjustable |
| Is Non Sparking | No |
| Item Type Name | Big-mouth adjustable wrench |
| Operation Mode | Mechanical |
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Frequently asked questions
How should I look after the Bahco BAH9031RUS?
The listing gives no care steps. It lists a black phosphate finish on alloy steel.
What is the maximum opening of the Bahco BAH9031RUS?
The listing does not give a jaw opening.
Is the Bahco BAH9031RUS a spark-proof wrench?
No. The listing says it is not non-sparking.