I. Purpose & Scope

To safely and effectively provide instruction on the inspection and proper use of crescent wrenches.

II. Definitions

Standard PPE – High Viz Garment, Hard Hat, Z-87.1 Safety Glasses, Gloves, Pants, Work Boots

III. Process

NOTE: Work instruction does not supplement the manual. For specific instructions for the exact model please refer to the owner’s manual. 

A. Potential Hazards

• Pinching Hazard

B. PPE

• Standard PPE

C. Inspection

1. Inspect for damage, rust and/or binding.

D. Use

1. Identify the nut or bolt to be tightened or loosened.
2. Open the wrench by turning the screw mechanism. This will open the jaw of the wrench. Check if you opened it enough for the nut to fit in, or if it needs to be opened more. Make sure it is open a bit more than the size of the nut.
3. Slip the open jaw over the nut and hold it in place. Turn the screw mechanism so that it clamps tightly around the nut.
4. Turn the wrench clockwise to tighten or counter clockwise to loosen the nut. Keep turning it until the nut is tight or loose enough to remove.
5. Remove the wrench by loosening the screw mechanism.

E. Maintenance

No maintenance required for this tool.