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Gray Tools 3190B combination wrench, 12-point, black oxide finish

Gray Tools

Gray Tools 3190B Combination Wrench 2-13/16" 12 Point Black Oxide

SKU CH-M6MK-T3KY6

A 12-point combination wrench with a corrosion-resistant black oxide finish for 2-13/16" hex fasteners

  • 12-point broaching gives a secure grip on 2-13/16" hex fasteners
  • Black oxide coating resists corrosion for longer tool life
  • Built to ANSI specifications for professional reliability
  • New condition ensures full performance from first use
  • Gray Tools brand denotes Canadian-made industrial quality

Precision Fit for Large Fasteners

The Gray Tools 3190B combination wrench handles 2-13/16" hex fasteners with a 12-point broached opening. The geometry grips flats securely to reduce rounding on stubborn bolts. It suits technicians and maintainers who encounter this specific size on heavy equipment or industrial assemblies.

Consistent Grip Under High Torque

The broached 12-point profile distributes force evenly across the fastener faces during sustained turning. Black oxide coating resists surface corrosion that can increase friction over long jobs. The tool meets ANSI dimensional standards so the fit remains repeatable when high torque is applied repeatedly.

Durable Finish for Daily Shop Use

Black oxide protects the steel from rust in damp environments without adding thickness that changes the fit. The single-piece forging eliminates weak joints that can fail under load. The open-end and box-end share the same nominal size so one wrench covers both access angles on the job.

Highlights

  • 12-point broaching gives a secure grip on 2-13/16" hex fasteners
  • Black oxide coating resists corrosion for longer tool life
  • Built to ANSI specifications for professional reliability
  • New condition ensures full performance from first use
  • Gray Tools brand denotes Canadian-made industrial quality

Specifications

BrandGRAY TOOLS

Questions about this item

How much heat does the 12-point box end generate during extended use?

The wrench is a hand tool with no moving parts or power source, so it produces no measurable heat during any length of use.

What drive tools must I already own for the 12-point opening to engage?

No separate drive tools are needed; the 12-point box end and open end both fit directly onto a 2-13/16 inch fastener by hand.

Will the 2-13/16 inch size work with the older SAE sockets I already keep?

The wrench is sized for a single 2-13/16 inch hex fastener and does not interface with socket drives or ratchets.

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