HookWashers for Secure Anchor Connections

GroundGrabba HookWashers are made from 3.5mm mild steel and finished in yellow zinc for anti-corrosion protection. Designed to suit the GroundGrabba Pro Series (GR13) anchors, they prevent the hex collar from slipping through oversized holes in timber or base plates, keeping your tie-downs reliable and secure.

HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion

Name: HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion
Brand: GroundGrabba Australia
SKU: HW13-4
Price: 10.36 AUD
Availability: InStock

HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion

check_circle Stops GroundGrabba collars slipping through oversized base holes.

check_circle Designed for GR13 series: Pro, Pro I, Pro II.

check_circle Strong 55mm diameter steel washer distributes load for secure anchoring

check_circle Ideal for projects needing firm, stable earth anchoring.

$10.36

$10.36 ~~$10.36~~

SAVE Sold out

Quantity

Product variants

(4 Reviews)

Made for the GroundGrabba Commercial series. 70mm diameter washers.

check_circle 55mm diameter

check_circle 3.5mm thick

check_circle Mild steel

check_circle 100% RISK FREE 12 Month Money Back Guarantee

check_circle Lifetime Replacement Warranty

HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion

$10.36

$10.36 ~~$10.36~~

SAVE Sold out

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What you Get

4, 12 or cartons of HookWasher 13

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Additional Information

Feedback from customers who use our GroundGrabba Pro II's for more semipermanent ground anchoring of pop up garages, timber for landscaping, simple garden retaining wall use. In these instances one needs to drill a hole in the material that is wider than the 25mm flange washer collar for the flights(spirals/wings) of the GroundGrabba to pass through. Once the hole diameter is larger than the Hex Head and Collar there is a need for a wide washer to make the diameter of the original collar wider. Enter the HookWasher!

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Set Up

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Specifications

Made of mild steel
Zinc-plated, anti-corrosion protection
60g
55mm diameter
3.5mm plate thickness
15mm hole diameter elongated through a special teardrop shape
6x washers per pack

Weight: 60gram per item packet weight is 360grams
Dimensions: Packet size 55mm diameter x 25mm

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How They Work

The diameter of the GroundGrabba Pro GR13 series have a collar diameter of 25mm. The GroundGrabba Hook Washer is wound onto the shaft then slid up under the collar giving your GroundGrabba a collar diameter of 55mm

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The GroundGrabba Hook Washer is designed to help you anchor down your outdoor equipment where the hole diameter needed to pass your GroundGrabba though is larger than the diameter of the GroundGrabba Hex Head and collar.

Compatible with GroundGrabba Junior, Pro, Pro I and Pro II.

NOT COMPATIBLE with GR14 Commercial Range

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Product Details & FAQs

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What You get

Hook Washers (GR13) are sold individually or in discounted 6-packs:

- 1 × Hook Washer (sold individually)
- Or 6 × Hook Washers (save 15%)

Stops the GR13 anchor’s collar from slipping through oversized holes in timber or plates.
(Not an attachment point — functions only as a support washer.)

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Can you deliver to my address if I’m not in a metro area?

Yes. We ship Australia-wide. Regional and remote deliveries may take longer, and Star Track is our recommended courier for reliability outside metro areas. All orders are shipped with ATL (Authority to Leave) unless a signature is specifically requested at checkout.

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When will my order arrive?

We dispatch from Tweed Heads, NSW several times a week. Metro areas are typically 1–3 business days depending on proximity to Brisbane/Eastern Seaboard; regional and remote deliveries may take longer. We recommend Star Track for reliability in regional and remote areas. Courier options and ETAs appear at checkout.

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What warranty is included?

All steel GroundGrabba products come with a Lifetime Replacement Warranty against breakage in normal use. Accessories like bags, drill bits, and carabiners include a 12-month manufacturer’s warranty.

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What is your return policy?

We back every purchase with a 100% risk-free 12-month return policy. If you’re not satisfied, you can return your GroundGrabba products within 12 months for a full refund or replacement (conditions apply).

Simple and genius - perfect tie down point

Perfect! I used these + ProII anchors + Grunt Straps to tie down a lighting setup for our wedding. I maxed out the Grunt Straps and my lever block to tension the catenary setup, and these hooks didn't even look like bending. Simple, neat, cheap, and strong-as!!

Hi Ken,

Thank you so much for your fantastic review on our ClosedHook tie down points! We are thrilled to hear that they were the perfect solution for your wedding lighting setup. We take pride in providing simple, neat, and strong products that withstand even the toughest tasks. We also appreciate your previous positive reviews for our other items. We hope you continue to choose our products for all your tie down needs.

Thank you again! David and team GroundGrabba

Secure for tiny house on wheels

If there's one thing I learned from Cyclone Alfred, it's that I needed some serious anchorage for my tiny house on wheels, deck, and solar system which is installed on a trailer. Particularly the solar system, which is set on an angle and catches the wind like a sail. With David's guidance and deep knowledge, I used the 900mm commercial pro ground anchors, with the cable tie downs for the ratchet straps to attach to. These are so unbelievably well designed - they fit the ground anchors like a charm, and they're versatile (eg can use one loop or both loops onto the ground anchor, and can use them to splay out to multiple ground anchors to increase hold). They're also very, very, very strong. Now that everything is in place, I'm absolutely confident everything is cyclone proof. Highly recommend these cable tie downs.

Hi Kerry, thank you for taking the time to leave such another thoughtful review. We're happy to hear that our Cable Tie Downs with Dual End Loops were able to provide the secure anchorage you needed for your tiny house on wheels, deck, and solar system. We are dedicated to creating high-quality and versatile products, and we're glad they were able to meet your needs. Thank you for choosing our products.

David and the team at GroundGrabba

Great product, incredible service

In preparation for the recent cyclone event I needed something to anchor my caravan to the ground. I found Ground Grabba via Facebook, & called David to enquire further. The product seemed perfect for the application, & after receiving excellent advice from David, I ordered the right product online. The cyclone was predicted to hit the coast at any time, so I was keen to get them ASAP. It turned out David's business was not far from my home. As I didn't have the impact torque wrench required to drive the anchor stakes into the ground, David offered to lend me his. Not only that, but he delivered the Ground Grabbas along with the impact wrench to my home well after business-hours, & helped me install them in the wind & rain. He also lent me the ratchet straps that I also needed. The whole setup only took about 15mins, very easy to do. The cyclone came & went, & my caravan is still safely secured. I can't thank David enough for his willingness to go out of his way to help, & for producing such a great product! Highly recommended.

Hey Jonathan,

Thank you so much for your kind review! We are so glad that our Stainless Steel Strap Tie Downs connected to your GroundGrabba Commercial Pro I's were able to help secure your caravan during the recent cyclone event. We always strive to provide excellent service and it's great to hear that I (David) was able to assist you with everything you needed. Our team is always here to help in any way we can. Thank you for choosing Ground Grabba and for recommending us. Stay safe!

Kind regards David Levne , inventor and co-founder

Strong bastards

I use these for animal trapping. Absolutely superb quality and yes, they work. Grab your own Ground Grabba today.

That's what we like to hear!

Thanks Anthony

The Best Peg System I have Ever Used

Top quality product. I have tried a few different brands of peg systems like these but i like these the most. A+ quality and customer service.

Thank you so much for your glowing review of our product, 'The Fang'! We're thrilled to hear that it's the best peg system you've ever used and that you've found our quality and customer service to be top-notch. We truly appreciate your support and we're here to help if you ever need anything. Happy organizing!

David Levine

Inventor and Co-founder

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HookWashers for Secure Anchor Connections

HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion

HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion

HookWasher Packs (4-Pack) | 3.5mm Mild Steel | Yellow Zinc Anti-Corrosion

More Information

What you Get

Additional Information

Additional Information

Set Up

Specifications

Specifications

How They Work

Learn More...

Video

Product Details & FAQs

What You get

Can you deliver to my address if I’m not in a metro area?

When will my order arrive?

What warranty is included?

What is your return policy?

From the founder:

Customer Reviews