Beware…. Not All H-5000-2’s Are the Same!

0
It’s nice to have a handful of these latches on hand – but a careful look says they aren’t identical.

What’s an “H-5000-2 ?” You ask? Good question! It’s the part number for a Hartwell latch – those clever spring-loaded latches that make your home built look like it came out of the Lockheed fighter factory. They latch very well, and release with a solid “click!” When triggered. They come in several different flavors, denoted by part numbers….like H-5000-2.

They are ridiculously expensive if you shop for a new one, but if you happen to be one of the first people into the B&B Airports tent on the first day of AirVenture… or get lucky at the Fly Market, you can sometimes pick them up for a relative song. Well… that song used to cost you $10, but that’s tripled since the price from the factory went up to government-contractor pricing!

Same part numbers, different depths for the striker!

But be careful—the part number doesn’t tell you the whole story. I have a box of them, and recently pulled out a pair to make matching storage hatch covers on the F1 Rocket. Got all the way to “installed and painted” before I realized that one latched fine, and the other didn’t. Hmm… same part numbers but one had a different depth for the latching arm! You see, along with the part number, there is a depth measurement stamped underneath – and that tells you how thick the “striker” material needs to be.

Fortunately I had two with identical depth numbers stamped on them, so I only had to drill out some rivets and repaint to get a perfect set. But the lesson is that when you find a bargain box full of the same part number, you might not have matching parts

Previous articleBuilding an Addiction
Paul Dye
Paul Dye, KITPLANES® Editor at Large, retired as a Lead Flight Director for NASA’s Human Space Flight program, with 50 years of aerospace experience on everything from Cubs to the Space Shuttle. An avid homebuilder, he began flying and working on airplanes as a teen and has experience with a wide range of construction techniques and materials. He flies an RV-8 and SubSonex jet that he built, an RV-3 that he built with his pilot wife, as well as a Dream Tundra and an electric Xenos motorglider they completed. Currently, they are building an F1 Rocket. A commercially licensed pilot, he has logged over 6000 hours in many different types of aircraft and is an A&P, FAA DAR, EAA Tech Counselor and Flight Advisor; he was formerly a member of the Homebuilder’s Council. He consults and collaborates in aerospace operations and flight-testing projects across the country.

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.