Threaded Deep Anchor for Sand, Soft Soil & Wind Zones

Need threaded hold-downs with maximum reach? The 900mm GR14 threaded anchor gives you deep grab through narrow holes—ideal for modular bases, wind-prone gear, or coastal installations. No flared flights needed. Just drill a pilot hole, drive it in, and use a nut to secure your project. Purpose-designed for where conventional ground screws won’t fit.

  • GroundGrabba-threaded-top-earth-ground-anchor-art-installations-sculptures-in-ground-cut -section-view-01

Threaded Ground Anchor Pack – 2 x 900mm GroundGrabba Pro II (Sculptures & Infrastructure)

Threaded Ground Anchor Pack – 2 x 900mm GroundGrabba Pro II (Sculptures & Infrastructure)

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 (4 Reviews)

check_circle Our longest threaded anchor—built for maximum grip in deeper or sandy ground

check_circle Installs into pilot holes where normal GroundGrabbas can’t pass through

check_circle Perfect for mounting plates with 15–40mm holes that won’t accept flighted shafts

check_circle Used where standard hex-head GroundGrabbas won’t suit the application

check_circle Requires a 24mm deep impact socket (not included) for deployment

check_circle Hot-dip galvanised to withstand long-term outdoor exposure

check_circle Rated best of the range for sand-based or high-stress applications

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Threaded Ground Anchor Pack – 2 x 900mm GroundGrabba Pro II (Sculptures & Infrastructure)

Threaded Ground Anchor Pack – 2 x 900mm GroundGrabba Pro II (Sculptures & Infrastructure)

$179.99
$179.99
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More Information

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What you Get

2x Commercial GroundGrabba Pro II - Threaded 900mm 

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How They Work

How They Work

Our engineered ground anchor flights (spirals) twist deep into the ground, creating a tree root–like hold. Once secure, you simply bolt down your base plate or item.

Our industrial-grade commercial threaded hex-less GroundGrabbas are designed so that, once driven into the ground, a portion of the threaded shaft remains above the surface—ready to fasten using the included washer and two locknuts.

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Set Up  

How To Deploy

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Specifications

GR14ULT 900mm  

  • Length 900mm 
  • Shaft thickness 15mm
  • Made of 1018 Carbon Steel
  • Galvanised for anti-corrosion
  • Weight 1.6kg 
  • Flights (spirals) 12.5mm  wide + - 0.5mm, 3mm thick
  • Diameter flights 38.5mm + - 0.5mm
  • Can screw through 30mm hole up to 8mm  thick
  • Fully welded flights
  • Nut - Socket size 24mm 
  • Weight: 1.62kg
    Dimensions: 90 × 4.5 × 4 cm 
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Grabbing Power

Hold Down Capacity 

Our GroundGrabba ground anchors will anchor down up to 7X that of a similar sized hammer in spike stake!

See the complete test chart here

GroundGrabba Commercial L (GR14UL)

Still not sure which GroundGrabba to use? Contact us 1300988655 or use this form.

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Recommendations

Recommended Tools to hire or own to help with installation: 

NB. These models were available at the time of writing.

**You will need a 24mm deep impact socket and set of spanners (for locking the two supplied nuts into themselves)**

For driving these into the ground, we recommend a high-torque impact wrench. Consider models like:

For driving these into the ground, we recommend a high-torque impact wrench. Consider models like:

  • Makita 40v TW001GZ-40v Brushless 3/4" Impact Wrench.
  • Milwaukee M18 FUEL 2867-20
  • Use a masonry drill at least the same length as the GR14 you choose for pilot holes in harder ground.

Important Note:

GroundGrabba Commercial range is designed for heavy-duty use with a tradie quality heavy-duty impact wrench.

Please note that these are not toys. Ensure you have a powerful drill, especially for hard ground conditions.

Anchor Specs & Applications

Why Choose the 900mm Threaded Version?

  • Threaded for Narrow Mounts – Designed to pass through mounting holes as small as 15mm, where standard GroundGrabbas with wide hex heads and 40mm flights won't fit
  • Flighted Shaft – Yes, this model still has flights for grip—but they won’t pass through steel base plates unless the hole is 40mm+ or 30mm if the plate is under 8mm thick
  • Maximum Depth – At 900mm long, it’s built to anchor deep into soft, loose, or shifting ground where shallow threads fail
  • Industrial-Grade Strength – Hot-dip galvanised GR14 steel handles field wear, torque stress, and repeated installs
  • Reusable – Installs and removes easily for temporary setups or gear that moves from site to site

Tip: If your base plate is thin (e.g., 3–5mm), you might be able to use a regular GroundGrabba through a ~30mm hole—but it’s not recommended, as the 40mm flights may still bind or jam. That’s where the threaded version really shines.

From the founder:

Hi, I’m David Levine, inventor of GroundGrabba. In 2017, Susu and I set out to create purpose-built ground anchors. Today, our range secures everything from tents to tiny homes. We back our steel anchors with a Lifetime Replacement Warranty* and a 100% RISK-FREE 12-month return policy. Whatever you need to anchor, we’ll keep you grounded.

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