Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
Thumbs 1
+1 More

Big Screw EZ Tie Down

Add to Wishlist
Part# 13-21308


Big-Screw EZ Tie-Down is an innovative tie down system combining a lightweight 18 cast aluminum ground screw, and a custom aviation designed attachment strap. The 18-inch long cast aluminum screw provides stronger ground holding in all soil types. The screw penetrates deeply into compacted soils resulting in superior holding strength. This exclusive design provides two to three times the holding strength of spike type angled-in tie-downs. Large 1 Wide screw provides 80 Square inches of Ground Contact Area, 40 times more than a spike. The screw can be positioned either directly below or set out from aircraft attachments. Quick easy installation and removal using a 1 ratchet, 1 socket, or a portable impact wrench (not included).

The aviation designed EZ Tie-Down Straps ensure a quick and secure connection between the ground and aircraft. The 9-foot tie-down straps feature industrial strength weather-proof Polyester webbing, single lever locking strap tensioner, heavy-duty vinyl coated aircraft attachment double S-hooks, and cast steel Chrome Plated Tie-Down Clip. The detachable straps can be used on airport ramps without the ground screw offering additional versatility.
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm -


    Ground Screw Features
  • Two to Three Times the Holding Strength of other Products
  • Heat Treated 356 Aluminum Alloy Screw
  • Light-Weight only 23 Ounces each
  • 18-Inch Length Penetrates Deep into Compacted Soil
  • 80 Square Inches of Ground Holding Surface Area Per Screw
  • Can be positioned directly below or set out from aircraft attachments
  • Quick Easy Installation and Removal with 1 ratchet, hex socket or portable impact wrench
  • Cast Steel Screw Attachment D-Ring with Webbing Loop
    EZ Tie-Down Strap Features
  • 9-Foot Industrial Strength Weather-Proof Polyester Straps
  • Single Lever Locking Strap Tensioner
  • Heavy-Duty Vinyl Coated Dual S-Hooks for aircraft attachments
  • Cast-Steel Chrome Plated Tie-Down Attachment Clip
  • Detachable Strap can be used on airport ramps
    Additional Features
  • Compact Padded Storage Bag holds 3 Screws, 3 Strap Sets, and Wrench
  • Lightweight, Entire System Weighs only 10 Pounds
  • American Manufacture, Pilot Designed


In The Box

  • 3 Aluminum Ground Screws with Steel Ring and Loop Strap
  • 3 Custom Designed Aircraft Tie-Down Attachment Straps
  • Compact Padded Storage Bag
  • Frequently Purchased With
  • Customers Also Viewed


Magaero L Verified Purchase


December 31, 2022

The flashing left from the casting process was excessive and ugly and made it hard to turn the screw into the ground. It took me about an hour with a rasp to make all three look as nice as the ones in the pictures. Including the wrench, these weigh the same as the Big Steel Spikes I was using before. The improvement here over the steel spikes is the quiet screwing process. I didnt like the noise of driving the steel spikes into the ground with my axe.

Dash A
July 11, 2022

Will tell you when we have a chance to use them. We bought them to use at Oshkosh

Patrick B Verified Purchase


February 24, 2022

We bought these in 2018 for our first trip to Oshkosh in a Cessna 206. Loved them. Worked great in multiple types of soil. Not easy in hard packed, gravelly, or dry ground, yet they did work (and Im not convinced that many other types would work at all, or very well). We have now used for multiple cross country tips and Oskkosh again. Highly recommend. Durable, easy to use, and strong!

Tom D
July 18, 2021

Great tie down system. I have used dog tie style screws in the past. The Big Screw system is such a huge improvement. Easy to install amazing holding power. Great straps too.

John R Verified Purchase


June 9, 2021

Great product, love the ease of the straps. Very Secure!!!!

Scott R
April 19, 2021

Tried once and was very satisfied. Used a good wrench, so the installation was easy Fortunately the weather was good, but I was not worried anymore

Paulo C
October 6, 2020

Wow. Very heavy-duty. Ive never seen how serious, high-quality, and heavy-duty a simple tie-down could be until now. Its like you could use this to secure a Challenger regional jet in the grass at Oshkosh during a cyclone with this thing!

Austin M
November 9, 2018

Good quality product, but weight might be a limiting factor when making it along on a trip.

Jacob B Verified Purchase


May 7, 2024

Looks great on the add. I though the screws were made out of steel. Its cast aluminum. If it were milled out of aluminum rod fine. But its not. Weak.

Lewis M Verified Purchase


September 24, 2021


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

View in Catalog

View Image View in Catalog