Jergens 20910 Lobed Palm-grip Knob 3.5 in 6-point Aluminum

Product Description

The JERGENS 20910 is a 6-point lobed palm-grip knob machined from 319-grade aluminum, designed for hand-tightening and adjustment applications in industrial and mechanical assemblies. With a 3.5-inch head diameter, the wide lobed profile distributes grip load across the palm, reducing fatigue during frequent or repeated adjustments. The tumble finish provides a clean, uniform surface. This knob is threaded for direct installation onto machine screws or studs and is suited for applications where tool-free operation is required.

Lobed palm-grip knobs like the JERGENS 20910 are commonly installed in machine tools, fixtures, jigs, and equipment panels where operators make regular manual adjustments. The 6-lobe geometry suits applications requiring moderate torque without tooling. The aluminum construction keeps weight low and resists corrosion in light-duty industrial environments. Machinists, millwrights, and equipment assemblers typically specify this style knob on clamping levers, feed stops, and adjustment carriages.

Key Features

• 3.5-inch head diameter with 6-point lobed profile for full palm engagement
• 319-grade aluminum construction - lightweight and corrosion-resistant
• Tumble finish for a clean, consistent surface texture
• 1.25-inch thread length accommodates standard stud and screw fasteners
• 1.25-inch hub diameter and 1.0-inch hub height for stable seating on mounting surfaces
• Tool-free operation suited for frequent manual adjustments

Compatibility

Designed as an OEM-style or aftermarket hand-knob replacement for machine tool fixtures, industrial equipment panels, and clamping assemblies requiring a 6-point lobed aluminum knob with a 3.5-inch head diameter.

Installation Notes

Installation is performed by machinists or equipment assemblers and requires no special tooling beyond confirming thread size and engagement depth match the receiving stud or screw. Verify the 1.25-inch thread length provides adequate engagement before tightening. De-energize or lock out any equipment before replacing knobs on live machinery per applicable OSHA lockout/tagout procedures. Do not exceed the hand-torque rating for the thread size in use.