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How to measure a screw: A practical guide

02 September 2024

Hey there! Patrick Faulkner, Lead Engineer at Accu here. Let's talk about how to measure a screw, specifically a cap head screw.

It’s pretty straightforward once you know what you're doing. In this quick guide, we’ll go over thread size, screw length, head diameter, and head depth. Plus, I’ll give you a heads-up on why getting the thread pitch right is super important and how measuring countersunk screws is a bit different. 

Tools you'll need
Before we dive in, make sure you have these tools handy:
1. Calliper: Digital or vernier, for precision
2. Ruler or measuring tape: For quick length checks
3. Thread pitch gauge: To get the thread pitch spot on
4. Magnifying glass: Useful for those tiny threads (optional)


Read the full article in DPA's September issue



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