

RAM Mounts Tough-Claw Large Clamp Double Ball Mount with Round Plate (RAP-401-202U) clamps a tablet, handheld or other device holder onto round, square or odd-shaped rails and bars with a diameter of 25–56 mm – without tools. The large Tough-Claw with rubber pads grips firmly and protects the surface, the medium 145 mm C-size (1.5") arm adjusts at both ends, and the 63.5 mm round plate with the universal AMPS pattern fits many RAM and third-party cradles. Popular on boat rails, roll bars, carts and machinery.
📦 What's in the box – RAP-401-202U
- Large Tough-Claw clamp base with C-size ball – tool-free clamp for rails and bars Ø 25–56 mm, rubber pads
- Double socket arm (C size, medium) – 145 mm overall, 118 mm socket to socket
- Round plate with C-size ball – Ø 63.5 mm, AMPS 4-hole (30 × 38 mm) and 3-hole 120° (Ø 46 mm) patterns
💡 You might also consider a lockable Tab-Lock tablet cradle or a Tough-Tray laptop holder with the AMPS pattern, and a key-locking knob to deter theft.
Key Features
- Tough-Claw clamp – clamps tool-free to round, square and odd-shaped rails and bars Ø 25–56 mm; rubber pads grip and protect the surface
- Patented ball-and-socket system – C-size (1.5") rubber balls adjust at both ends of the arm and damp shock and vibration
- Medium double socket arm – 145 mm overall, 118 mm socket to socket, with an easy-to-adjust knob
- Universal AMPS pattern – the Ø 63.5 mm round plate has the 4-hole AMPS (30 × 38 mm) and 3-hole 120° (Ø 46 mm) patterns used by most RAM and third-party cradles
- Load capacity – 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use
- Durable construction – powder-coated marine-grade aluminium and high-strength composite, backed by RAM's lifetime warranty
Compatibility
- Round, square and odd-shaped rails and bars Ø 25–56 mm
- Cradles and devices with the AMPS 4-hole pattern (30 × 38 mm)
- Holders with the 3-hole 120° pattern (Ø 46 mm)
- All RAM C-size (1.5") ball bases, adapters and holders
Technical Specifications
| Part Number | RAP-401-202U |
|---|---|
| Product Type | Clamp mount kit |
| Connection | RAM C-size ball (1.5"); AMPS 4-hole (30 × 38 mm); 3-hole 120° (Ø 46 mm) |
| Load Capacity | 1.8 kg (4 lb) for standard use, 1.4 kg (3 lb) for heavy-duty use |
| Material | Powder-coated marine-grade aluminium and high-strength composite |
| Dimensions | Arm 145 mm overall (118 mm socket to socket); overall height 292 mm; round plate Ø 63.5 mm |
| Weight | 0.91 kg (2 lb) |
| Warranty | Lifetime warranty (RAM Mounts) |
| In the Box | Large Tough-Claw clamp base with C-size ball, double socket arm (C size, medium), round plate with C-size ball |
More RAM cradles, ball bases and socket arms are waiting 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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