Gibraltar MDKL38-G Locking Knob Plunger M10x1.5

Product Description

The GIBRALTAR MDKL38-G is a locking knob handle plunger designed for use in positioning, indexing, and workholding applications where repeatable, tool-free locking is required. The plunger features an M10x1.5 threaded body with a 20mm thread length and a Delrin knob for smooth manual actuation. The spring-loaded plunger delivers an initial end force of 0.22 pounds and a final end force of 2.02 pounds, making it suitable for light-duty clamping and locating tasks. The body measures 0.98 inches in length with a maximum plunger diameter of 0.236 inches and a plunger projection of 0.196 inches. Machinists, toolmakers, and fixture builders are the primary installers of this component.

The MDKL38-G is used in machine tool fixtures, jigs, and assembly workholding setups where an operator needs to lock and release a plunger position without tools. The Delrin knob provides comfortable hand torque for threading the plunger into tapped holes in fixture plates, machine tables, or fabricated brackets. It is appropriate for light-duty industrial and manufacturing environments where a compact, threaded spring plunger with a locking knob is specified.

Key Features

• M10x1.5 thread with 20mm thread length for standard metric tapped hole fitment
• Locking knob plunger design allows tool-free position locking and release
• Delrin knob provides low-friction, comfortable manual actuation
• Spring force range: 0.22 pounds initial to 2.02 pounds final end force
• Plunger projection of 0.196 inches with maximum plunger diameter of 0.236 inches
• Compact body length of 0.98 inches suits space-constrained fixture designs

Compatibility

Designed as a direct-fit replacement or new installation for M10x1.5 tapped metric holes in machine tool fixtures, jigs, and positioning hardware requiring a locking knob handle spring plunger.

Installation Notes

Installation is performed by hand-threading the plunger into a clean, properly tapped M10x1.5 metric hole. Verify thread engagement depth against the 20mm thread length before finalizing fixture design. Do not overtighten the knob, as the Delrin material has defined torque limits. Confirm plunger projection and travel clearances are adequate for the locating or indexing application before placing the assembly into service.