Spectar logo long variantSpectar

The super handy thread gauge for
anytime, anywhere.

By Mach Super on YouTube logo
Spectar app running on a phone with a bolt floating in front

Identify mystery threads visually using just your phone screen, calibrated precisely.

No app store download

Photo of Spectar app on a phone with an M12 x 1.25 hex head bolt positioned perfectly over a matching silhouette

Precise Calibration. Verified.

Spectar is built by a Machinist.
Machinists know the importance of verification. Spectar is calibrated and verified by you - no blackbox AI systems. Calibrate once, saved for good.

Try the example below 👇

1
Calibrate
Use the scrubber to adjust the scale until the ruler matches a physical ruler.
Scrub grips
Scrub grips
swipe or tap handwriting
2
Place
Hold a screw up to the white silhouette.
watch handwriting
3
Match
Adjust scrubbers until the silhouette matches the screw.
Diameter
5/16"
Scrub grips
M8
Scrub grips
M9
Pitch
24TPI
Scrub grips
1.25mm
Scrub grips
20TPI
watch handwriting

Complete actual calibration in the app.

The only universal, anytime, anywhere app for identifying fasteners.
Identify thread standards, pitch, diameter and length all at once.
no download icon
No app store download, launch from any browser.
Highly accurate using algorithmically generated threads in 3D space, projected into a silhouette.
Install Spectar to your home screen like a native app for offline functionality and faster loading.
Completely FREE to use.

By a Maker, for Makers

Christian Lewis profile picMach Super logo
YouTube iconInstagram icon

By Mach Super on YouTube

Spectar is built entirely in-house by me, Christian Lewis from the Mach Super YouTube channel. It all started when I wanted to put my new web development skills to use by making a really nice e-commerce fastener store. While doing that, I way over-built a visualiser to show exactly what each product would look like. Then a comment from someone online made me realise I could use that as a standalone app for identifying screws. So with over a year of coding in my spare time (and sometimes not-so-spare time) we have Spectar! I hope you love it.

Keeping it Real with You

When you're in the shop or on-site, you need shit to work right. So I've designed Spectar like an industrial tool.

It is laser focused on function and serving you the best that it can - it may never match physical instruments, but no physical instruments are as flexible and convenient. Many hours have been spent carefully considering the best way to do things.

Features Coming Soon

Spectar is still in beta testing, expect new features to roll out rapidly over the coming months.

  • Where to Buy

    In the future, you will be able to use Spectar to identify your fastener, and with one-click, view a directory of local and online suppliers to buy hardware matching that exact spec.

  • More Fastener Categories

    More fastener categories are always being worked on.

  • More Tools

    Spectar won’t just be limited to screws, soon it will offer tools for identifying other hardware such as o-rings, bearings, gears and more.

  • Engineering Reference Materials

    Spectar aims to be a generally handy tool for engineers and makers to identify hardware and access technical references with written materials and innovative interactive calculators.