Item Condition: New
Indoor Cycle - Upright and Recumbent Bike - Cable Gyms and Freeweight Bench - Seat Pop Pin Size Knob 2.1"(54mm)- Thread Pin M16 (5-8")
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Item Description
Item Condition: New
M16 × 1.5 Pull Pin / Pop Pin Adjustment Knob
Available in 18mm, 20mm, 25mm & 27mm Pin Lengths - See measuring guide at the bottom.
These M16 × 1.5 threaded pull pins are designed for fitness equipment requiring quick and secure adjustment of seats, back pads, footplates, support arms, and other movable components. Commonly used on strength machines, functional trainers, plate-loaded equipment, benches, and selectorized gym systems, these pull pins provide positive locking engagement while allowing fast equipment adjustments.
This listing includes four common pin projection lengths to accommodate different frame thicknesses and adjustment applications.
Available Sizes
| Part Number | Thread Size | Pin Diameter | Pin Projection Length |
|---|---|---|---|
| #7682-18 | M16 × 1.5 | 8mm (0.31") | 18mm (0.71") |
| #7682-20 | M16 × 1.5 | 8mm (0.31") | 20mm (0.79") |
| #7682-25 | M16 × 1.5 | 8mm (0.31") | 25mm (0.98") |
| #7682-27 | M16 × 1.5 | 8mm (0.31") | 27mm (1.06") |
Common Dimensions
- Knob Diameter: 54mm (2.13")
- Thread Diameter: 16mm (5/8")
- Thread Pitch: M16 × 1.5
- Pin Diameter: 8mm (0.31")
Key Features
- Positive locking pull pin design
- M16 × 1.5 fine-thread body
- Large ergonomic adjustment knob
- Commercial-grade construction
- Direct replacement for worn or damaged adjustment pins
Common Compatible Brands
These M16 × 1.5 pull pins are commonly found on select models from:
- Body-Solid
- Powerline by Body-Solid
- Hoist Fitness
- TuffStuff
- Cybex
- Life Fitness
- Hammer Strength
- Nautilus
- Star Trac
- Matrix
- SportsArt
- Precor
- TRUE Fitness
- BodyCraft
- Legend Fitness
- Torque Fitness
- Sunny Health & Fitness
- Joroto
- Pooboo
- Echelon (some models)
- Yosuda
- Various OEM/white-label spin bikes
- Marcy/Apex
Common Applications
- Adjustable weight benches
- Functional trainers
- Multi-station home gyms
- Leg press machines
- Smith machines
- Seat adjustments
- Back pad positioning
- Roller pad adjustments
- Safety stop positioning
- Support arm adjustments
Other Applications
- Indoor Cycling & Stationary Bikes: Used for seat post height, seat forward/backward horizontal slides, and handlebar height adjustments.
- Squat Racks & Power Cages: Used on adjustable spotter arms, J-cups, or integrated cable pulley attachments.
- Weight Benches: Used for incline/decline backrest adjustments and leg developer extensions.
- Selectorized Strength Equipment: Used on chest press machines, leg extensions, and functional trainers to adjust user position settings
Important Fitment Information
The most important measurement is the pin projection length. Many fitness machines use the same M16 × 1.5 thread but require different pin lengths.
Please verify:
- M16 × 1.5 thread size
- 8mm pin diameter
- Required pin projection length (18mm, 20mm, 25mm, or 27mm)
before ordering.
Let customers speak for us
from 1240 reviewsOrdered a part from Hydra Fitness Parts because the OEM part was back ordered for months. Part came in just a couple of days and had it installed by my service tech shortly after. My cross trainer works like new again. Definitely recommend.
Works great perfect fit would buy again
I moved my treadmill from one room to another. I happened to break off a rear foot to it during a difficult spot. It has been like this for 2 years. I decided to look for the part, it was hard to find. But then I found it and jow my treadmill is back together and ready to use
Ordered a part for our treadmill that got lost during a move. Perfect fit! Quick and easy shipping. Would highly recommend if you are looking for odd parts for your Horizon treadmill.
Hydra fit had the part I needed to repair my Bowflex treadmill for only $150. Bowflex techs were telling me I needed a new monitor control for $2,000 but I knew that was wrong because there was no electrical supply to the monitor so it couldn’t be that! Hydrogen gave me a couple ideas I I figured it out. NO thanks Bowflex, and thanks hydro fit.
Used power rods appear to be in good shape and delivery time was very good.
Parts no longer made from my treadmill. Hydra Fitness Exchange had a front roller that works great! Quiet, smooth, almost like new again! Timely shipping, good packaging, helpful website. Thanks!
Product fits perfect. Was able to verify that it would fit my model, and it arrived in a timely fashion. I would order from you guys in the future.
Spirit XE200 elliptical. Common problem of the wheels jumping off and galling the aluminum track rail covers. By the time I fixed the problem, my original track rail covers were too damaged. These were inexpensive and appear to be OEM. Only two bolts to swap them out. Excellent!
Ordered replacement part for my eliptical machine and fit tightly into place and the machine is working fine.
Upon receipt of the item, it would not charge. In working with them I was told to give charging one last shot. This time I pressed the start button multiple times and it started to charge. It synched with my bike. I thanked them for their patience in working out the problem.
The website was easy to use and the product arrived when promised.
We’ve been looking for this part for about 7 years. It fits perfectly. Shipping time was excellent.
Thank you so much!
Product was received on time and fit the description as advertised.
Great value for the price.
