Nuts & Bolts PRO

Name: Nuts & Bolts PRO
Price: 2.99 USD
Availability: InStock
Rating: 4.44444465637207 (82 reviews)
Author: Tim Judkins

Tim Judkins

4.4

82 reviews

1K+

Downloads

Everyone

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.

Screw head types include:
* Pan
* Button
* Socket Head Cap Screw
* Round
* Flat
* Hex
* Binder
* Fillister
* Truss

Updated on

Jun 19, 2025

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 and App info and performance

No data collected

Learn more about how developers declare collection

Data is encrypted in transit

Data can’t be deleted

Ratings and reviews

4.4

76 reviews

Dave Ussell

June 10, 2025

For clearance and tap drill holes it would be nice if fractional drill sizes were included. I first saw this app a long time ago but searches for Nuts and Bolts, Bolts and Nuts never found it again. It did find lots of useless games. Only when I searched for Nuts & Bolts Pro did I find it. You are losing purchasers here. Expand your keywords to make it easier to find. For one add "and" as well as "&". Good luck and thanks.

Paul Cutts

May 5, 2022

Love the app, but long over due for an update. Especially as its the paid version. Would really like to see larger sizes added like M30 3.5 thread etc.

5 people found this review helpful

Tim Judkins

May 19, 2022

Thanks for the feedback. I'll look into adding larger sizes. I also just did an update so it looks a bit better and gets rid of the warning about being compiled for an old version of android.

Ron de Leeuw

June 15, 2024

I've been appreciating this app for about ten years, and I'm happy it's still being updated to work in the latest Android versions. Keep it up! Suggestion: dark mode option.

1 person found this review helpful