RAM® Square Post Clamp Base for Posts up to 5" Wide Without Hardware

Part#: RAM-247U-5NH
UPC: 793442939846
$96.49

Overview

The RAM-247U-5NH is a clamp base with 1.5" rubber ball that will connect to rails up to 5" maximum in width. Hardware not included.

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:

1.45 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: Ball Sizes

QUESTIONS & ANSWERS

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  • What is the distance from center of hole to center of hole on the mount with the ball?

    This mount is 5" wide center to center. Overall length is 6.88".
RAM® Square Post Clamp Base for Posts up to 5" Wide Without Hardware
$96.49

Size Guide

Ball sizes
  • A Size 0.56" ball
  • B Size 1" ball
  • C Size — this product 1.5" ball
  • D Size 2.25" ball
  • E Size 3.38" ball

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
A0.56" (14.3 mm)0.5 lbAction cameras and other ultra-light devices
B1" (25.4 mm)2 lbsPhones, GPS units, and small tablets — the most common size
C — this product1.5" (38.1 mm)4 lbsLarge tablets, fish finders, and rougher rides
D2.25" (57.2 mm)6 lbsRugged tablets, laptops, and heavy equipment
E3.38" (85.9 mm)15 lbsLarge 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.

Add-on & Accessories

C Size Double Socket Arms
See All
RAM® Double Socket Arm - C Size Medium RAM-201U $31.49
RAM® Double Socket Arm - C Size Long RAM-201U-D $57.49
RAM® Double Socket Arm - C Size Short RAM-201U-B $29.49
RAM® Double Socket Swivel & Ratchet Arm - C Size RAP-200-2U $40.99
RAM® Composite Double Socket Arm - C Size Short RAP-201U-B $17.49
RAM® Composite Double Socket Arm - C Size Medium RAP-201U $22.49
RAM® Double Socket Swivel Arm - C Size RAP-200-12U $31.99
RAM® Double Socket Arm with Metal Knob - C Size Long RAM-201MU-D $75.99
RAM® Double Socket Arm with Metal Knob - C Size Medium RAM-201MU $49.49
RAM® Flex-Arm™ with 18" Aluminum Rod and Two Single Socket Arms RAM-316-2U $65.49
RAM® Double Socket Arm with Metal Knob - C Size Short RAM-201MU-B $41.99
RAM® Double Socket Arm with RAM® Pin-Lock™ Security Knob - C Size Medium RAM-201-SU $38.49
RAM® Double Socket Arm with RAM® Pin-Lock™ 5-Pin Security Knob - C Size RAM-201-BS-KEY5U $36.99
RAM® Double Socket Arm with RAM® Pin-Lock™ Security Knob - C Size Short RAM-201-BSU $36.99
RAM® Double Socket Arm with RAM® Pin-Lock™ 5-Pin Security Knob RAM-201-S-KEY5U $39.49
RAM® Double Socket Arm with Steel Key Lock Knob - C Size Medium RAM-201LSU $62.99
RAM® Double Socket Arm with Brass Key Lock Knob - C Size Short RAM-201U-BL $65.49
RAM® Composite Double Socket Arm with 5-Pin RAM® Pin-Lock™ Security Knob RAP-201-S-KEY5U $30.49
RAM® Double Socket Arm with Brass Key Lock Knob - C Size Medium RAM-201LU $69.99
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