Copyright © 2025 National Products Inc. Seattle, Washington. All rights reserved.

rammount.com
1-800-497-7479
sales@rammount.com
RAM® Ball Adapter with 1.75" 1/4"-20 Threaded Stud | |
---|---|
Part #:
RAM-273U
UPC:
793442002328
|
![]() |
Product Information | |
---|---|
Overview | The RAM-273U consists of a C size 1.5" rubber ball with a hex post and 1/4"-20 x 1.75" stainless steel threaded stud. This component can mount to any surface with a 1/4"-20 hole, and the ball is compatible with any C size socket arms. |
Specifications | |
---|---|
hardware included | (1) 1/4"-20 x 1.75" Threaded Stud |
thread pitch | 1/4"-20 x 1.75" |
ball size | C Size (1.5") |
weight capacity | Standard Use: 4 lbs Heavy-Duty Use: 3 lbs |
materials | Marine-grade aluminum Stainless steel |
packaging type | Poly Bag |
Weight | 0.17 lb |
Additional Information | This product is not considered a RAM® Add-A-Ball™ and will not replace the bolt of a C size socket arm. |

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size
Holds .5 lbs.
Trail Cameras

B Size
Holds 2 lbs.
Phones, Action Cameras, Light Duty Tablets

C Size
Holds 4 lbs.
Fishfinders, Heavy Duty Tablets

D Size
Holds 6 lbs.
Heavy Monitors

E Size
Holds 15 lbs.
Heavy Monitors
The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.
Size | A Size | B Size | C Size | D Size | E Size |
---|---|---|---|---|---|
Short Arm | Overall Length N/A |
Overall Length 2.42" |
Overall Length 3.56" |
Overall Length 5.69" |
Overall Length 5.69" |
Socket-to-Socket Length N/A |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 2.5" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 4.66" |
|
Medium Arm | Overall Length 2.42" |
Overall Length 3.73" |
Overall Length 5.69" |
Overall Length 8.44" |
Overall Length 12.63" |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 3" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 6.88" |
Socket-to-Socket Length 9.88" |
|
Long Arm | Overall Length 6" |
Overall Length 6" |
Overall Length 9.13" |
Overall Length 12.98" |
Overall Length N/A |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 8" |
Socket-to-Socket Length 11.41" |
Socket-to-Socket Length N/A |
Kit Components

The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured by a multitude of interchangeable components to fit your specific needs.

A Size
Holds .5 lbs.
Trail Cameras

B Size
Holds 2 lbs.
Phones, Action Cameras, Light Duty Tablets

C Size
Holds 4 lbs.
Fishfinders, Heavy Duty Tablets

D Size
Holds 6 lbs.
Heavy Monitors

E Size
Holds 15 lbs.
Heavy Monitors
The unique double ball and socket design allows you to adjust your mount to the perfect viewing or operating angle, all with the turn of a single knob. This modular design can be configured with a variety of interchangeable components to fit your specific mounting needs.
Size | A Size | B Size | C Size | D Size | E Size |
---|---|---|---|---|---|
Short Arm | Overall Length N/A |
Overall Length 2.42" |
Overall Length 3.56" |
Overall Length 5.69" |
Overall Length 5.69" |
Socket-to-Socket Length N/A |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 2.5" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 4.66" |
|
Medium Arm | Overall Length 2.42" |
Overall Length 3.73" |
Overall Length 5.69" |
Overall Length 8.44" |
Overall Length 12.63" |
Socket-to-Socket Length 1.75" |
Socket-to-Socket Length 3" |
Socket-to-Socket Length 4.66" |
Socket-to-Socket Length 6.88" |
Socket-to-Socket Length 9.88" |
|
Long Arm | Overall Length 6" |
Overall Length 6" |
Overall Length 9.13" |
Overall Length 12.98" |
Overall Length N/A |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 5.31" |
Socket-to-Socket Length 8" |
Socket-to-Socket Length 11.41" |
Socket-to-Socket Length N/A |
Kit Components

Get a notification as soon as this product is available by signing up below!
Thank you for your interest in RAM-273U!
We'll email you once the item is available.
Overview
The RAM-273U consists of a C size 1.5" rubber ball with a hex post and 1/4"-20 x 1.75" stainless steel threaded stud. This component can mount to any surface with a 1/4"-20 hole, and the ball is compatible with any C size socket arms.
hardware included:
(1) 1/4"-20 x 1.75" Threaded Stud
thread pitch:
1/4"-20 x 1.75"
ball size:
C Size (1.5")
weight capacity:
Standard Use: 4 lbs
Heavy-Duty Use: 3 lbs
materials:
Marine-grade aluminum
Stainless steel
packaging type:
Poly Bag
Weight:
0.17 lb
Additional Information:
This product is not considered a RAM® Add-A-Ball™ and will not replace the bolt of a C size socket arm.