Nuts & Bolts

Contains ads
3.9
583 reviews
100K+
Downloads
Content rating
Everyone
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About this app

Nuts & Bolts is a simple application to look up screw sizes. It provides screw diameters, screw head dimensions, tap drill sizes, and clearance holes for standard sizes #0 to 1" and metric sizes M1.4 to M24. A simple interface allows you to cycle through sizes and screw types OR tap any dimension to quickly jump to the size you want.

Free version includes dimensions for screw diameters, tap drill sizes, clearance holes for all standard and metric sizes as well as screw head dimensions for pan and button head screws.

Get the PRO version and unlock screw head dimensions for:
* Socket Head Cap Screw
* Round
* Flat
* Hex
* Binder
* Fillister
* Truss
Updated on
Aug 25, 2023

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
App activity
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data canโ€™t be deleted

Ratings and reviews

3.8
542 reviews
David Merriman
February 3, 2022
If all you need is the most basic info - clearance, tap, drill, etc - for screws, this is the app. Don't know about any update (should, just to make the warning go away), but it seems to run fine; I mean, it isn't like the screws *mutated*, or anything. I'm fine with it, and thank the author for the time &trouble. Update, and I'll spring for the Pro license.
7 people found this review helpful
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Tim Judkins
May 19, 2022
Thanks for the feedback. I just did an update so there's no more warning.
A Google user
March 7, 2020
Hopes were high but upon opening it said app was developed for an earlier android version and may not work properly. Minimal valuable data in the free app but can't justify purchase if it's not current. Latest update appears to be 2012? App should be removed from playstore.
23 people found this review helpful
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Tim Judkins
November 1, 2022
We have already fixed this issue. Please update your app on Google Play store and try again.
Roy Tellason
May 16, 2022
Just updated, and now it immediately crashes, saying "There was an error reading screw sizes". Removed it and re-installed, same behavior. Uninstalling...
5 people found this review helpful
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Tim Judkins
May 17, 2022
Our apologies for this. The app has been updated to fix the crash.

What's new

Performance improvements and bug fixes