Springfield Plug-In Flat-Sided Base 9 in | 3300750-D1
Springfield Plug-In Flat-Sided Base 9 in | 3300750-D1 — Product description
This is the Springfield Plug-In base that anchors a 2-3/8 inch flat-sided pedestal post to your deck. The double flat-sided socket keys the post so your seat or table won't spin, and the 9 inch satin aluminum base spreads the load across the mounting surface. Non-threaded, so the post just drops in.
If you're running a Springfield Plug-In pedestal system, this is the deck-side half of it. The 3300750-D1 is a 9 inch satin aluminum base built for a 2-3/8 inch diameter post, and the socket is double flat-sided so the post keys in place instead of spinning free. That flat-sided detail is the whole point. A round post lets your seat swivel wherever it wants, which is fine until you're trying to hold a heading and the chair keeps drifting. This one locks the post orientation.
Springfield's been building marine seating hardware for decades, and the Plug-In line is their bread and butter for a reason. It's simple, it's serviceable, and the parts interchange across the series.
It's a plug-in, non-threaded design. There's no threading the post down. You drop the post into the socket and it seats on the flats, and you pull it right back out when you want a clear deck for washing down or loading gear. The 9 inch base gives you a wide footprint to bolt to, which spreads the load instead of concentrating it on a small pad.
The base is aluminum with a satin finish, so it holds up to salt spray and sun without the flaking you get from cheaper plated parts. Satin also hides scuffs better than a polished finish, which helps on a part that lives down at foot level and takes a beating from boots, wet gear, and tackle boxes sliding around. It's the kind of part you bolt down once and forget about.
One thing to get right before you order: this base is matched to a 2-3/8 inch flat-sided post. If your existing post is round, or a different diameter, it won't key correctly. Measure your post first. Building a new setup from scratch? Pair it with a matching Springfield flat-sided post and you're set. Not sure what you've got, send us the numbers and we'll sort it out.
Key Features
- 9 inch diameter base spreads seat or table load across a wide deck footprint
- Fits 2-3/8 inch diameter flat-sided posts
- Double flat-sided socket keys the post so the seat or table won't rotate
- Non-threaded plug-in design lets you drop the post in and lift it back out for a clear deck
- Satin-finished aluminum resists salt spray, sun, and scuffing
- Genuine Springfield Marine Plug-In series component, interchangeable with matching flat-sided posts
Why Buy from NVN Marine
- Authorized Springfield Marine reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Double Flat-Sided Base; For 2-3/8 Inch Diameter Post; 9 Inch Diameter; Non-Threaded; Satin; Aluminum |
|---|---|
| Brand | Springfield Marine |
| Manufacturer Part Number | 3300750-D1 |
| UPC | 038132914353 |
| Base Diameter | 9 in |
| Post Diameter | 2-3/8 in |
| Mount Type | Plug-In, Non-Threaded |
| Socket Style | Double Flat-Sided |
| Finish | Satin |
| Material | Aluminum |
| Series | Plug-In |
Frequently asked questions
What post does this base fit?
It's built for a 2-3/8 inch diameter flat-sided post. The socket is double flat-sided to match that profile, so a round post or a different diameter won't seat correctly. Measure your post before ordering.
What does double flat-sided mean?
The post and the socket both have flat sides that key into each other. That keeps the post from rotating in the base, so your seat or table holds its position instead of spinning free.
Is the post included?
No. This is the base only. You'll need a matching 2-3/8 inch flat-sided Springfield post to go with it.
Is it threaded?
No, it's a non-threaded plug-in design. The post drops straight into the socket and lifts back out, so you can pull the seat or table off for a clear deck.
What's it made of?
Satin-finished aluminum. It stands up to salt spray and sun, and the satin finish hides scuffs better than a polished one on a part that sits down at foot level.
Can I use this for a table as well as a seat?
Yes. As long as your post is the matching 2-3/8 inch flat-sided type, this base works under a seat pedestal or a table pedestal.
