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RAM® Ball Adapter with AMPS Plate - C Size

Part #: RAM-347U UPC: 793442908767

Features

Rectangular plate features the AMPS hole pattern for connection to a wide variety of devices
Included C size 1.5" RAM® rubber ball allows for connection to any C size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
Backed by a lifetime warranty

RAM® Ball Adapter with AMPS Plate - C Size

Product Information
Overview	The RAM-347U consists of a 1.5" diameter rubber ball connected at right angles to a 2" x 1.7" rectangle base. The base has four pre-drilled holes at each corner, making the universal AMPS hole pattern.

Specifications
hole pattern	4-Hole AMPS: 1.181" x 1.496"
plate size	1.69" x 2"
ball size	C Size (1.5")
weight capacity	Standard Use: 4 lbs Heavy-Duty Use: 3 lbs
materials	Marine-grade aluminum
packaging type	Poly Bag
Weight	0.21 lb

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RAM® Ball Adapter with AMPS Plate - C Size

Name: RAM® Ball Adapter with AMPS Plate - C Size
Brand: RAM Mounts
SKU: RAM-347U
Price: 16.49 USD
Availability: InStock

Part#: RAM-347U

UPC: 793442908767

$16.49

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 — this product	1.5" (38.1 mm)	4 lbs	Large tablets, fish finders, and rougher rides
D	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.

RAM® Double Socket Arm - C Size Medium

$31.49

Overview

The RAM-347U consists of a 1.5" diameter rubber ball connected at right angles to a 2" x 1.7" rectangle base. The base has four pre-drilled holes at each corner, making the universal AMPS hole pattern.

Features

Rectangular plate features the AMPS hole pattern for connection to a wide variety of devices
Included C size 1.5" RAM® rubber ball allows for connection to any C size RAM® double socket arm; ball and socket technology allows for near-infinite adjustability
Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments
Backed by a lifetime warranty

hole pattern:

4-Hole AMPS: 1.181" x 1.496"

plate size:

1.69" x 2"

ball size:

C Size (1.5")

weight capacity:

Standard Use: 4 lbs
Heavy-Duty Use: 3 lbs

materials:

Marine-grade aluminum

packaging type:

Poly Bag

Weight:

0.21 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.

Print

Documents

Hole Pattern Reference Guide

Knowledge Base: Ball Sizes

QUESTIONS & ANSWERS

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What size screws are needed for the holes on this ball plate?

The most common screw sizes are #8, #10, M4 and M5 screws. However, if you are pairing this with any RAM® Holder, the holder will come with the necessary hardware to connect to your mount.