Springfield Marine W1100012 Economy Adjustable Jon Boat Seat Clamp
The Springfield Marine Adjustable Seat Clamp easily converts your bench into a seat mount with swivel. Clamps securely onto most benches with 2 adjustable wing nuts. Includes a heavy duty seat swivel for full rotation.
- Adjustable seat clamp to fit most bench seats, with seat mount/swivel
- E-coated steel to resist corrosion
- Adjusts from 8″ to 19″ / Rotates 360 degrees
| Product Dimensions | 10.00 x 17.75 x 2.50 in |
|---|---|
| Weight | 4.00 lbs |
| Shipping Dimensions | 11.00 x 18.00 x 3.00 in |
FAQ
What is the range of bench sizes this clamp can fit?
The clamp adjusts from 8 inches to 19 inches in width, making it compatible with most standard bench seats.
Is the swivel fully rotatable?
Yes, the included heavy duty seat swivel allows for a full 360-degree rotation for comfortable seating.
Does the clamp come with any tools for installation?
No tools are included, but the clamp uses two adjustable wing nuts that are easy to tighten by hand.




Angela Wright –
Installed the clamp on my outdoor bench in under 10 minutes. The swivel works smoothly and the clamp stays secure even when I’m sitting on it for long periods. E-coated steel looks durable and doesn’t show rust after a few weeks of use.
Deirdre Wallace –
Fits my 15-inch bench perfectly. The 360-degree swivel makes it easy to adjust my seating position. It’s a simple upgrade that adds comfort without needing extra tools.
Gavin Greene –
Great value for the price. The clamp is sturdy and holds firm even when I’m using it on a windy day. The e-coated steel resists moisture well, which is perfect for outdoor use.