Condition New
M20 Indexing Plunger / Pull Pin Assembly - Measure First!
M20 Threaded Body with M12 Pull Knob Thread & 10mm Locking Pin
This heavy-duty indexing plunger is designed for commercial fitness equipment requiring secure positioning and repeatable adjustment of seats, back pads, support arms, footplates, and other movable components. The spring-loaded locking pin allows equipment adjustments while maintaining positive engagement and safe operation.
Unlike traditional pop pins, this style features a precision-machined steel body with a threaded pull knob assembly, making it ideal for high-use commercial strength equipment where durability and smooth operation are critical.
📐 Dimensions
- Overall Length: 76mm (3.00")
- Knob Diameter: 37mm (1.46")
- Body Thread Size: M20
- Body Thread Length: 6mm (0.24")
- Pull Knob Thread Size: M12
- Locking Pin Diameter: 10mm (0.39")
- Pin Projection Length: 12mm (0.47")
🔩 Key Features
Precision Indexing Plunger Design
Provides secure positioning and repeatable adjustment of equipment components.
Heavy-Duty Steel Construction
Machined metal body designed for commercial fitness equipment applications.
10mm Spring-Loaded Locking Pin
Delivers positive engagement and reliable locking performance.
Replaceable Threaded Knob Assembly
Features an M12 threaded pull knob connection for serviceability.
Commercial Grade Durability
Built for high-cycle use in gyms, rehabilitation centers, universities, and athletic facilities.
🏋️ Common Compatible Brands
This style of indexing plunger is commonly found on select equipment from:
- Life Fitness Signature Series
- Hammer Strength Select Series
- Hammer Strength MTS Series
- Cybex Eagle Series
- Cybex VR Series
- Matrix Magnum Series
- Matrix Aura Series
- Technogym Selection Series
- Technogym Element Series
- Precor Discovery Series
- Hoist ROC-IT Series
- Paramount Strength
- Legend Fitness
- TuffStuff Pro Series
- SportsArt Strength Equipment
🏋️ Common Applications
- Adjustable seat positioning
- Back pad adjustments
- Leg roller positioning
- Footplate adjustments
- Functional trainer arm settings
- Smith machine safety stops
- Support arm positioning
- Strength machine adjustment mechanisms
- Commercial fitness equipment restoration
⚙️ How It Works
- Pull Knob to Retract Pin
The spring-loaded locking pin disengages from the adjustment hole. - Reposition Equipment Component
Move the seat, pad, support arm, or assembly to the desired position. - Release Knob
The pin automatically engages the nearest adjustment hole. - Lock Securely in Place
Positive engagement helps maintain safe operation during exercise.
✅ Benefits
- Fast and secure equipment adjustments
- Precision-machined commercial construction
- Smooth spring-loaded operation
- Positive locking engagement
- Long service life in high-use environments
- Ideal replacement for worn or damaged indexing plungers
⚠️ Important Fitment Information
Please verify:
- M20 body thread size
- 6mm thread length
- 10mm locking pin diameter
- 12mm pin projection
- 76mm overall length
Many commercial fitness machines use similar indexing plungers, but exact dimensions are required for proper fit and safe equipment operation.