The Ampco Safety Tools W-611 is a 7/16 in non-sparking, non-magnetic combination wrench (open end + 12-point box end) — 6-7/8 in. OAL — machined from nickel aluminum bronze with 15° box-end offset, engineered for hazardous work environments.

Manufactured in the USA and Factory Mutual approved, it is beryllium-free and built for professionals who work around flammable or combustible vapors, liquids, dust, or residue where a standard steel tool could trigger a dangerous spark. Its non-magnetic properties make it safe for use near highly sensitive magnetic equipment, including MRI and clean room environments, and it conforms to ASTM F2503 and ASTM A342 standards.

Unlike conventional steel tools, the Ampco W-611 delivers outstanding durability even in the most corrosive conditions, including exposure to salt water, chemicals, and acids.

The W-611 combination wrench is the go-to choice for oil and gas, petrochemical, mining, military, and industrial maintenance applications where worker safety and tool reliability are non-negotiable.

Specifications

Size: 7/16 in

Overall length: 6-7/8 in (175 mm)

Box-end offset: 15°

FM Approved: Yes

Availability: Typically in stock. If your item is unavailable at the time of order, we will contact you promptly to confirm lead times and discuss alternatives.

HS Code: 8204.11

COO: USA

FAQ

What alloy is the Ampco W-611 made from?

The wrench is machined from Ampco's nickel aluminum bronze alloy — non-sparking, non-magnetic, Factory Mutual approved, and beryllium-free.

What is the box-end head angle?

The box end is offset at 15° to provide clearance between the handle and the work surface, enabling a full swing in confined spaces.

Is the W-611 safe near MRI equipment?

Yes. The non-magnetic alloy is independently tested for safety in MRI environments up to 3-Tesla. It is ASTM F2503 compliant.

Can I use this wrench on stainless steel or exotic metal fasteners?

Yes. Aluminum bronze provides good grip on standard and exotic fasteners without galling, and resists corrosion from process chemicals.

Is the Ampco W-611 covered by a warranty?

Yes. All Ampco Safety Tools carry a lifetime warranty.