

RAM Mounts Square Post Clamp Base (RAM-B-247U-3) clamps around square posts up to 76.2 mm (3") wide – for example the overhead-guard posts of a forklift, racking uprights or machine frames – without drilling. Two 5/16"-18 × 3" machine screws with nyloc nuts pull the clamp tight, and the 1" B-size ball accepts any B-size double socket arm. A neat way to mount a scanner, phone or small tablet right where the operator needs it.
📦 What's in the box – RAM-B-247U-3
- Square post clamp base with ball – for posts up to 76.2 mm wide, B-size 1" ball
- 2 machine screws – 5/16"-18 × 3"
- 2 nyloc nuts – 5/16"-18
💡 To get started, you might also consider a B-size double socket arm and a device holder such as the Quick-Grip phone holder.
Key Features
- Square post clamp – fits square posts up to 76.2 mm (3") wide; no drilling required
- Secure fixing – two 5/16"-18 × 3" machine screws with nyloc nuts resist loosening from vibration
- B-size 1" ball – connects to any RAM B-size double socket arm for near-infinite adjustment
- Load rating – up to 2 lb (0.9 kg) in standard use and 1 lb (0.45 kg) in heavy-duty use; ideal for phones, GPS units, scanners and small tablets
- Built for harsh conditions – powder-coated marine-grade aluminium, backed by RAM's lifetime warranty
Compatibility
- Square posts up to 76.2 mm (3") wide, e.g. forklift overhead-guard posts
- All RAM B-size (1") double socket arms and ball components
Technical Specifications
| Part Number | RAM-B-247U-3 |
|---|---|
| Product Type | Rail / clamp ball base, B-size |
| Connection | B-size (1" / 25.4 mm) ball |
| Clamp Range | Square posts up to 76.2 mm (3") wide |
| Load Capacity | 2 lb (0.9 kg) standard use; 1 lb (0.45 kg) heavy-duty use |
| Material | Powder-coated marine-grade aluminium |
| Weight | 0.38 kg (0.83 lb) |
| Warranty | Lifetime warranty (RAM Mounts) |
| In the Box | Square post clamp base with ball, 2 machine screws, 2 nyloc nuts |
You will find matching cradles, holders and more RAM mounting parts in our Mobile Terminal Accessories collection. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.
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