EHAQ

THREAD IDENTIFIER

Identify any screw or bolt from a single photo — using only a coin you already have.

HOW IT WORKS

YOUR COIN IS THE RULER

Lay the screw on white paper with a coin one inch above it and take a picture. EHAQ measures the diameter, pitch and length against the coin and names the size — metric M1 to M24, SAE #00 to 1 inch.

Details

DEPENDABLE RESULTS

WIDTH, PITCH AND LENGTH - METRIC AND STANDARD

THE APP USER PLAYS AN ACTIVE ROLE IN THE PROCESS BY DEFINING THE COIN AND THREAD BORDERS, ALONG WITH HAND-MARKING THE THREADS IF NECESSARY.

Details

VISUALLY VERIFY

LOCKED, the screen is life-size — lay the real screw on it to check the length. UNLOCK to zoom in and compare the threads side-by-side.

SUPPORT

Getting a good result
Use plain white paper and lay the screw pointing up. Place the coin about one inch above the screw. Hold the phone level — the app shows a bubble level. Box the coin carefully (tap Help and Example on that screen to see how), then mark the threads when the app asks.Why did I get two sizes?
Some sizes are too close to tell apart in a photo. The app shows both and tells you which is more common. Check the screw against both before buying.Does it need the internet?
No. Measuring works offline. Only the shop-local feature uses your location and a connection.Is my photo uploaded?
No. Photos are saved only to your Photos, and only if you choose to save them.Which coins work?
CURRENTLY, the US quarter, Canadian quarter and Mexican 2 Peso coins.Contact
Email [email protected] — we usually reply within two business days.

PRIVACY

Effective September 27, 2026EHAQ is published by TEN-20, LLC (WE). This policy explains what the EHAQ app does with your information.What we collect
Nothing, by default. EHAQ does not require an account and does not collect your name, email, contacts or identifiers.Camera and photos
The camera is used only to take the measuring photo. The photo is analyzed on your phone and is not uploaded. If you choose to save a result, it is saved to your Photos library with your permission.Location
Location is used only if you choose to find local stores, and only while you use that feature. We do not store or share it.Data sharing
We do not sell or share personal information. We do not use advertising or tracking.Children
EHAQ is not directed to children under 13, and we do not knowingly collect information from them.Changes
If we change this policy, we will post the new version here with a new effective date.Contact
[email protected]