RAM Mounts D-size square post clamp base for posts up to 4 inch wide – product photo
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – alternative view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – additional view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – product photo
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – alternative view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – additional view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – product photo
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – alternative view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – additional view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – product photo
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – alternative view
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – additional view

RAM Mounts Square Post Clamp Base for Posts up to 4" Wide, D-Size (RAM-D-247U-4)

63,11 € +VAT
Ball size
C (1.5")D (2.25")
Material
AluminumAluminum (steel-reinforced)
Clamp range
44.5–101.6 mm (1.75–4")Up to 101.6 mm (4")Up to 127 mm (5")Up to 50.8 mm (2")Up to 63.5 mm (2.5")Up to 76.2 mm (3")

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  • Available: In Stock
  • Vendor: RAM MOUNT
  • Type: For Mobile Terminals
  • Barcode: RAM-D-247U-4
RAM Mounts D-size square post clamp base for posts up to 4 inch wide – product photo
RAM MOUNT
RAM Mounts Square Post Clamp Base for Posts up to 4" Wide, D-Size (RAM-D-247U-4)
63,11 € +VAT

RAM Mounts Square Post Clamp Base (RAM-D-247U-4) clamps onto square posts up to 4" (101.6 mm) wide and carries a D-size 2.25" (57 mm) rubber ball for any RAM D-size double socket arm. It is a no-drill base for rugged tablets, laptops and vehicle-mount computers on forklift posts, racking, carts and machine frames. Narrower posts are covered too – simply rotate the base so the bolts sit flush against the post. The clamp is adjustable and easy to remove, and the powder-coated marine-grade aluminium is made for vibration, weather and workshop use.

📦 What's in the box – RAM-D-247U-4

  • Square Post Clamp Base – with D-size 2.25" rubber ball, for square posts up to 4" wide
  • Mounting hardware – 2× machine screw 5/16"-18 x 3", 2× nyloc nut 5/16"-18

💡 To get started, you might also consider a short D-size double socket arm and a ball plate for the device side, such as the D-size VESA 75 × 75 plate or the D-size round AMPS plate.

View accessories →

Key Features

  • Square post clamp – fits square posts up to 4" (101.6 mm) wide; adjustable and easy to remove
  • Forklift-ready – takes any length D-size socket arm, ball adapter and holder; for narrower posts, rotate the base so the bolts sit flush against the post
  • D-size ball – 2.25" (57 mm) rubber ball fits any RAM D-size double socket arm; the ball-and-socket joint allows near-infinite adjustment
  • Load rating – 6 lb (2.7 kg) standard use, 5 lb (2.3 kg) heavy-duty use
  • Rugged build – powder-coated marine-grade aluminium, backed by RAM's lifetime warranty

Compatibility

  • Square posts up to 4" (101.6 mm) wide
  • All RAM D-size (2.25") double socket arms and D-size ball components

Technical Specifications

Part Number RAM-D-247U-4
Product Type Square post clamp base with ball
Connection RAM D-size ball, 2.25" (57 mm)
Clamp Range Square posts up to 4" (101.6 mm) wide
Load Rating 6 lb (2.7 kg) standard use, 5 lb (2.3 kg) heavy-duty use
Material Powder-coated marine-grade aluminium
Weight 0.68 kg (1.5 lb)
Warranty Lifetime warranty (RAM Mounts)
In the Box Square Post Clamp Base, 2× machine screw 5/16"-18 x 3", 2× nyloc nut 5/16"-18

Looking for a device to mount? Browse our Vehicle Mount Terminals range. Planning a vehicle or forklift installation, or ordering for a whole fleet? Contact us for project support and volume pricing.

Available Versions

Part NumberBall sizeMaterialClamp rangePrice
RAM Mounts Square Post Clamp Base for Posts up to 4" Wide, C-Size (RAM-247U-4) RAM-247U-4C (1.5")AluminumUp to 101.6 mm (4")56,74 €+VATOut of Stock View
RAM Mounts Square Post Clamp Base for Posts up to 5" Wide, C-Size (RAM-247U-5) RAM-247U-5C (1.5")AluminumUp to 127 mm (5")106,87 €+VATOut of Stock View
RAM Mounts Square Post Clamp Base for Posts 1.75–4" Wide, D-Size (RAM-D-247U) RAM-D-247UD (2.25")Aluminum44.5–101.6 mm (1.75–4")73,05 €+VATOut of Stock View
RAM Mounts Square Post Clamp Base for Posts up to 2" Wide, D-Size (RAM-D-247U-2) RAM-D-247U-2D (2.25")AluminumUp to 50.8 mm (2")45,97 €+VATOut of Stock View
RAM Mounts Square Post Clamp Base for Posts up to 2.5" Wide, D-Size (RAM-D-247U-25) RAM-D-247U-25D (2.25")AluminumUp to 63.5 mm (2.5")48,37 €+VATOut of Stock View
RAM Mounts Square Post Clamp Base for Posts up to 3" Wide, D-Size (RAM-D-247U-3) RAM-D-247U-3D (2.25")AluminumUp to 76.2 mm (3")44,09 €+VATOut of Stock View
RAM Mounts Square Post Clamp Base for Posts up to 4" Wide, D-Size (RAM-D-247U-4) RAM-D-247U-4ViewingD (2.25")AluminumUp to 101.6 mm (4")63,11 €+VATIn Stock
RAM Mounts Steel-Reinforced Square Post Clamp Base for Posts up to 4" Wide, D-Size (RAM-D-247U-4-IN1) RAM-D-247U-4-IN1D (2.25")Aluminum (steel-reinforced)Up to 101.6 mm (4")70,46 €+VATOut of Stock View

Accessories

ProductPrice
RAM Mounts Double Socket Arm, D-Size, Short, 130 mm (RAM-D-201U-C) RAM Mounts Double Socket Arm, D-Size, Short, 130 mmRAM-D-201U-C63,09 €+VATIn Stock
RAM Mounts Double Socket Arm, D-Size, Medium, 214 mm (RAM-D-201U) RAM Mounts Double Socket Arm, D-Size, Medium, 214 mmRAM-D-201U93,10 €+VATIn Stock
RAM Mounts Double Socket Arm, D-Size, Long, 330 mm (RAM-D-201U-E) RAM Mounts Double Socket Arm, D-Size, Long, 330 mmRAM-D-201U-E142,80 €+VATOut of Stock View
RAM Mounts 75 × 75 mm VESA Plate with Ball, D-Size (RAM-D-2461U) RAM Mounts 75 × 75 mm VESA Plate with Ball, D-SizeRAM-D-2461U35,19 €+VATIn Stock
RAM Mounts Round AMPS Plate with Ball, D-Size (RAM-D-254U) RAM Mounts Round AMPS Plate with Ball, D-SizeRAM-D-254U30,06 €+VATIn Stock
RAM Mounts 100 × 100 mm VESA Plate with Ball, D-Size (RAM-D-246U) RAM Mounts 100 × 100 mm VESA Plate with Ball, D-SizeRAM-D-246U42,04 €+VATIn Stock

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