The Square Post Clamp Mount Base lets you bolt a 1.5" (C-size) ball mount to any square or rectangular post up to 103mm (4") wide — without drilling into the post itself. Two long through-bolts run from the upper plate down through a lower clamp plate, sandwiching the post tight between them. Perfect for forklift cab posts, warehouse scanners, scaffolding rails, marine rails, roll cages, RV and trailer posts, and agricultural machinery uprights.
Like every mount in the Outcamp Modular Mount System, the ball is a standard 1.5" (C-size) and pairs with any C-size double socket arm or device cradle — including RAM Mounts, Arkon and iBOLT C-size components. Mount a tablet, phone, GPS, fish finder, scanner or work light wherever you need it.
Key Features
-
Fits posts up to 103mm (4") wide: Designed for square and rectangular posts — forklift cab uprights, scaffolding tubes, roll cage bars, marine rails, agricultural machinery posts.
-
No drilling required: Two long through-bolts clamp the upper plate to the lower plate, sandwiching the post between — no holes drilled into the post itself.
-
1.5" (C-size) ball: Standard RAM Mounts compatible. Pairs with any C-size double socket arm or device cradle in the Outcamp Modular Mount System (and works with Arkon and iBOLT C-size components too).
-
Marine-grade aluminium body: Lightweight, corrosion resistant, finished in tough black powder coating — built for salt air, rain, dust, UV and warehouse abuse.
-
Stainless steel hardware: Long through-bolts and washers in stainless steel for long-term reliability in marine, coastal and industrial environments.
-
Holds firm under vibration: Two-bolt clamp design keeps the mount tight on forklifts, work vehicles and rough water.
Specifications
- Maximum post width: 103mm (4")
- Ball size: 1.5" (38.1mm) — C-size, RAM Mounts compatible
- Body material: marine-grade aluminium with black powder coat finish
- Hardware: stainless steel through-bolts, nuts and washers
- Weight capacity: approx 1.8kg (4 lb) standard load, 1.4kg (3 lb) recommended for heavy vibration use
- Mounting: two long through-bolts — no drilling into post required
- Compatibility: any 1.5"/C-size double socket arm or cradle — works with Outcamp Modular Mount System, RAM Mounts, Arkon and iBOLT C-size components
What's in the Box
- 1 x square post clamp upper plate (with 1.5" ball)
- 1 x lower clamp plate
- 2 x long stainless steel through-bolts with nuts and washers
Use Cases
- Forklift cab posts — mount tablets, scanners, work phones or comms devices in warehouses and distribution centres
- Warehouse and factory scaffolding — clamp scanners, tablets or work lights to scaffold uprights without drilling
- 4WD and truck roll cages — mount a phone, GPS or UHF mic to a square cage bar
- Marine rails and posts — mount a fish finder, GPS or phone to a square rail or post on boats and pontoons
- RV, caravan and trailer posts — mount a tablet, screen or light to internal or external square posts
- Agricultural machinery — clamp work tablets, GPS guidance screens or scanners to tractor cab uprights and harvester posts
- Workshop benches and frames — mount a screen, scanner or display to a square frame member
Part of the Outcamp Modular Mount System. Mix and match arms, balls, bases and cradles in 1", 1.5" and 2.25" (B / C / D) sizes. Ships Australia-wide.
