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RAM® Double Socket Arm - D Size Short

Part #: RAM-D-201U-C UPC: 793442220111

Features

Low-profile design with an overall length of 5.1" and socket-to-socket length of 3.6"
Attaches to any D size RAM® ball component, including mounting bases and device holders; double ball and socket technology allows for near-infinite adjustability of your RAM® mounting system
Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
Backed by a lifetime warranty

Product Information

Overview

The RAM® Double Socket Arm (RAM-D-201U-C) serves as the “socket” in the RAM® patented ball-and-socket mounting system. This double socket arm connects to any two D size ball adapters or bases. A spring inside the arm keeps one socket open, making it easy to attach to a ball. With an overall length of 5.1" and socket-to-socket length of 3.6", the arm features an easy-to-adjust knob that provides near-infinite positioning.

Specifications
product dimensions	Overall Length: 5.1"
socket to socket length	3.6"
ball size	D Size (2.25")
weight capacity	Standard Use: 6 lbs Heavy-Duty Use: 5 lbs
materials	Marine-grade aluminum
packaging type	Poly Bag
Weight	1.7 lb

RAM® Double Socket Arm - D Size Short

Name: RAM® Double Socket Arm - D Size Short
Brand: RAM Mounts
SKU: RAM-D-201U-C
Price: 62.99 USD
Availability: InStock

Part#: RAM-D-201U-C

UPC: 793442220111

$62.99

Options

Every RAM® mount is built around a rubber ball and socket system. The ball size sets how much weight the mount can carry. Match it to your device for smooth adjustment with a rock-solid hold.

RAM Mounts ball size specifications and typical uses
Size	Ball Diameter	Max Load*	Best For
A	0.56" (14.3 mm)	0.5 lb	Action cameras and other ultra-light devices
B	1" (25.4 mm)	2 lbs	Phones, GPS units, and small tablets — the most common size
C	1.5" (38.1 mm)	4 lbs	Large tablets, fish finders, and rougher rides
D — this product	2.25" (57.2 mm)	6 lbs	Rugged tablets, laptops, and heavy equipment
E	3.38" (85.9 mm)	15 lbs	Large displays and demanding aviation or industrial use

*Approximate capacity for a standard ball with a mid-length arm. Shorter arms and steel-reinforced posts increase real-world capacity.

Reading part numbers

The letter after RAM tells you the ball size: RAM-B-166 uses a 1" B ball, while RAM-D-201 uses a 2.25" D ball. C size parts are the exception and carry no letter, so RAM-201U is a C size arm.

Short, medium, and long double socket arms compared side by side. This product uses a Short arm — Arm lengths

The double socket arm clamps over two balls — one on the base and one on your device holder. Arm length sets your reach: short arms are the most stable, while longer arms give you more freedom to position the device.

RAM Mounts overall and socket-to-socket arm lengths by ball size
Arm Length	Measurement	A Size	B Size	C Size	D Size — this product's ball size	E Size
Short	Overall Length	N/A	2.42"	3.56"	5.69" — this product	5.69"
Short	Socket-to-Socket Length	N/A	1.75"	2.5"	4.66"	4.66"
Medium	Overall Length	2.42"	3.73"	5.69"	8.44"	12.63"
Medium	Socket-to-Socket Length	1.75"	3"	4.66"	6.88"	9.88"
Long	Overall Length	3.56"	6"	9.13"	12.98"	N/A
Long	Socket-to-Socket Length	3.12"	5.31"	8"	11.41"	N/A

Options

RAM® Double Ball Adapter - D Size

$60.99

Overview

Features

Low-profile design with an overall length of 5.1" and socket-to-socket length of 3.6"
Attaches to any D size RAM® ball component, including mounting bases and device holders; double ball and socket technology allows for near-infinite adjustability of your RAM® mounting system
Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
Backed by a lifetime warranty

product dimensions:

Overall Length: 5.1"

socket to socket length:

3.6"

ball size:

D Size (2.25")

weight capacity:

Standard Use: 6 lbs
Heavy-Duty Use: 5 lbs

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

1.7 lb

Return Policy:

All products purchased from RAM® can be returned within 30 days with no restocking fee (return shipping not provided). See full return policy here.

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Documents

Knowledge Base: Socket Arms

QUESTIONS & ANSWERS

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Does this SKU include the hardware needed to bolt it to a flat surface?

No, the hardware required to install this mount is not included. Because these are mounted to such a wide variety of materials and applications we do not know what hardware to provide. The best resource for that type of information is usually a local hardware store or the manufacturer of the vehicle you are mounting to.
I am interested in getting either the Size D short Ram Ball mount or the swing arm mount for a flat surface. When the ball mount arm is horizontal in the shortest position, what is the vertical distance to the plate? I'm wondering which mount would be the lowest for my fish finder.

The distance between the top of the drill base to the bottom of the marine electronics adapter plate is approximately 3.75" when the arm is fully horizontal.
RAM® Double Socket Arm - D Size Short does the RAM® T-Knob come with it

Yes, the T-Knob will be on the double socket arm.