Jergens 28906 Offset Clamping Handle 1/2 Inch Reamed Hole

Product Description

The JERGENS 28906 is a single offset arm clamping handle designed for tool, fixture, and machine positioning applications where a secure, repeatable grip is required. Constructed from carbon steel with a cadmium plating finish for corrosion resistance, this handle features a reamed 1/2 inch hole for precise shaft or stud engagement. The 1 inch ball diameter provides a comfortable, firm grip during clamping and adjustment operations. Licensed machinists, toolroom technicians, and fixture builders typically specify this style of handle for jigs, vises, and machine tool setups that demand accurate manual actuation.

This offset clamping handle suits industrial and manufacturing environments where single-arm offset geometry is needed to clear adjacent hardware or provide additional torque leverage. The 3 inch arm spread and 0.375 inch arm diameter make it appropriate for light- to medium-duty fixture work on mills, drill presses, rotary tables, and similar tooling. The cadmium plated finish helps maintain dimensional integrity in moderate shop environments.

Key Features

• Single offset arm configuration provides clearance over obstructions in tight fixture layouts
• Reamed 1/2 inch hole ensures close dimensional tolerance for stud or shaft fit
• Carbon steel construction with cadmium plating for strength and corrosion resistance
• 1 inch ball diameter for solid manual grip during clamping operations
• 3 inch arm spread delivers adequate leverage for hand-tightening applications
• 7/8 inch hole depth accommodates standard stud engagement lengths

Compatibility

Designed as an OEM-style replacement or direct-fit clamping handle for jigs, fixtures, and machine tool assemblies requiring a single offset arm with a 1/2 inch reamed hole and 1-1/4 inch hub diameter.

Installation Notes

Installation is typically performed by toolroom machinists or fixture technicians using standard hand tools. Ensure the mating stud or shaft is within the tolerance range of the reamed hole before assembly to avoid binding. De-energize and lock out any associated machinery before servicing or replacing clamping hardware on active fixtures. Avoid applying excessive impact force to the ball or arm, as this may affect the reamed hole dimension over time.