RAM® Tough-Ball™ with 5/16"-18 X .625" Threaded Stud

Name: RAM® Tough-Ball™ with 5/16"-18 X .625" Threaded Stud
Brand: RAM Mounts
SKU: RAP-B-379U-311862
Price: 7.35 USD
Availability: InStock
Rating: 5.0 (5 reviews)

RAM® Tough-Ball™ with 5/16"-18 X .625" Threaded Stud - Main image

$7.35 ~~$11.49~~ In stock

Category: Components

The RAM® Tough-Ball™ with 5/16"-18 X .625" threaded stud is a mounting component from RAM Mounts. It consists of a 1" diameter rubber ball connected to a 5/16"-18 X .625" male threaded post, allowing the ball to be attached to a compatible threaded connection.

1" diameter rubber ball
5/16"-18 X .625" male threaded post
B Size 1" ball, rated to hold up to 2 lbs
Steel reinforced post construction
Part number: RAP-B-379U-311862

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (5.0 / 5 · 5 reviews)

Christopher ★★★★★ Oct 23, 2026

The threaded stud is exactly 5/16"-18 as described, and it screwed into my existing mount without any adapter needed. Perfect fit if you need that specific size.

John ★★★★★ Oct 22, 2026

The rubber ball has just the right amount of grip to hold my device securely without being impossible to adjust. Perfect fit for the 5/16"-18 stud mount I needed for my truck setup.

Sebastian O. ★★★★★ Oct 21, 2026

The threaded stud made installation on my custom mount super straightforward, no adapter needed. The rubber ball holds firm even on bumpy roads, which was my main concern.