RAM® Friction Hinge Arm with Pin-Lock™ Ball for Tough-Bar™

Part#: RAM-TB-FHA2-1BU
UPC: 793442027864

Kit Components

$72.49

Overview

The RAM® Friction Hinge Arm with Pin-Lock™ Ball for Tough-Bar™ (RAM-TB-FHA2-1BU) is a modular attachment designed to let you build your own C size mounting solution on the RAM® Tough-Bar™. This setup features a C size RAM® Pin-Lock™ ball, allowing you to connect any C size double socket arm and device holder—ideal for tablets, GPS devices, or other accessories. When paired with a C size arm, this configuration offers up to 180° of articulation, while the integrated friction hinge provides smooth, single-axis pivoting for fine-tuned positioning or quick access to vehicle controls. For added safety, the Collar-Lock™ system acts as a rotational limiter, preventing over-rotation that could send the arm or device into the dashboard during adjustment or impact. Together, the friction hinge and Collar-Lock™ provide stable, vibration-resistant performance even in demanding environments. The built-in cable retention feature keeps cords neatly organized and secured along the arm, preventing snags or strain during adjustment. With its durable construction and RAM® compatibility, the Friction Hinge Arm for Tough-Bar™ delivers customizable adjustability, secure hold, and reliable protection for your equipment and vehicle interior.

Features

  • Enables smooth, single-axis side-to-side pivoting for optimal keyboard or accessory positioning
  • Integrated Collar-Lock™ system prevents over-rotation to protect devices and vehicle interiors during adjustment or impact
  • Includes a C size ball base; complete your RAM® solution with an arm and holder
  • Built-in cable retention keeps cords organized
  • Backed by a lifetime warranty

hardware included:

Assembly Hardware

product dimensions:

Length: 6.38" (center clamp to center ball)

ball size:

C Size (1.5")

weight capacity:

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

materials:

Marine-grade aluminum
High strength composite

packaging type:

Poly Bag

Weight:

0.95 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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RAM® Friction Hinge Arm with Pin-Lock™ Ball for Tough-Bar™
$72.49

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

RAM® Tough-Bar™
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C Size Double Socket Arms
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