RAM Mounting Systems
RAM Mount RAM® Ball Adapter w/1/2" NPT Hole & Tightening Knob
MPN: RAM-330U
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RAM Mounting Systems
RAM Mount RAM® Square Post Clamp Base f/Posts up to 4" Wide
Out of StockNewSKU: RAM-D-247U-4
$55.24$64.99per unit
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This item is currently out of stock.
Special order from RAM Mounting Systems — Estimated 2–4 weeks.
Description
RAM® Square Post Clamp Base for Posts up to 4" Wide
The RAM-D-247U-4 consists of a 4" clamp base with a 2.25" ball.
Hardware Included:
- (2) 5/16"-18 x 3" Machine Screws
- (2) 5/16"-18 Nylock Nuts
Specifications:
- CLAMP RANGE: 4" max width
- BALL/SOCKET SIZE: D Size (2.25")
- WEIGHT CAPACITY: 6 lbs
- MATERIALS: Marine-grade aluminum
- WEIGHT: 1.44lbs
Accessories
No accessories listed for this product.
Specifications
| SKU | RAM-D-247U-4 |
| UPC | 793442224768 |
| Brand | RAM Mounting Systems |
| Category | Ram Mount Store |
| Country of Origin | — |
| Weight | 1.46 |
| Dimensions | 5 x 5 x 2 |
| Status | Active |
| Last Synced | 8/28/2026, 2:05:59 AM |
Compliance & Shipping
Returnable
Product Literature
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Frequently Bought Together
Compare Key Features
| Feature |  RAM Mount RAM® Square Post Clamp Base f/Posts up to 4" Wide CURRENT |  RAM Mount Long Double Socket Arm f/2.25" Ball Bases |  RAM Mount 100x100mm VESA Plate w/2.25" Ball |  RAM Mount D Size Short Double Socket Arm f/2.25" Ball Base |  RAM Mount D Size 2.25" Ball on Round Plate w/AMPS Hole Pattern |
|---|---|---|---|---|---|
| Price | $55.24 | $112.19 | $34.84 | $53.54 | $27.19 |
| Brand | RAM Mounting Systems | RAM Mounting Systems | RAM Mounting Systems | RAM Mounting Systems | RAM Mounting Systems |
| Condition | New | New | New | New | New |
| Availability | Out of Stock | In Stock | In Stock | In Stock | In Stock |
| Weight | 1.46 | 3.6 | 0.9 | 1.7 | 0.5 |
| Dimensions | 5 x 5 x 2 | 13 x 5 x 3 | 5 x 5 x 5 | 6 x 6 x 5 | 3 x 2 x 2 |
| SKU | RAM-D-247U-4 | RAM-D-201U-E | RAM-D-246U | RAM-D-201U-C | RAM-D-254U |
| Country | — | US | UNITED STATES | US | — |
| View Item | View Item | View Item | View Item | View Item |
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$55.24