Williams 472 Adjustable Hook Spanner 1.25 to 3 Inches

Product Description

The WILLIAMS 472 is an adjustable hook spanner wrench designed to tighten and loosen slotted round nuts, retaining rings, and bearing lock nuts found in mechanical assemblies, pumps, motors, and similar equipment. The adjustable jaw spans from 1.25 inches to 3 inches, covering a wide range of fastener diameters without requiring multiple fixed-size tools. Built in the United States, the 472 is a hand tool suited for use by mechanics, millwrights, plumbers, and HVAC technicians working on rotating equipment and threaded collar assemblies. At 0.49 pounds, it is compact enough for use in tight service spaces.

The WILLIAMS 472 adjustable hook spanner is used wherever slotted or notched round nuts must be driven without damaging the component face. Typical applications include shaft bearing retainers, pump housings, motor end bells, and hydraulic cylinder caps. The 1.25 inch to 3 inch range makes it practical for both smaller precision assemblies and larger industrial components encountered in commercial mechanical and industrial service work.

Key Features

• Adjustable jaw range of 1.25 inches to 3 inches covers a broad span of round nut diameters
• Hook design engages slotted round nuts and retaining rings without marring contact surfaces
• Manufactured in the United States
• Lightweight at 0.49 pounds for easy one-handed use in confined spaces
• Single tool replaces multiple fixed-size hook spanners across this diameter range

Compatibility

Designed as a general-purpose adjustable hook spanner suitable for slotted round nuts and bearing lock nuts with an outside diameter between 1.25 inches and 3 inches.

Installation Notes

This tool is used by mechanics, millwrights, plumbers, and HVAC technicians during assembly and disassembly of rotating equipment and mechanical subassemblies. Ensure the equipment is de-energized, depressurized, and locked out before servicing any component that requires use of a spanner wrench. Seat the hook firmly in the nut slot before applying torque to avoid slipping and surface damage. Follow applicable facility safety procedures and equipment manufacturer service guidelines when working on pump, motor, or bearing assemblies.