29/05/2026
🔩 Did you know there are 14 types of holes in engineering?
A hole might seem simple — but in mechanical design, it's a precision feature with real consequences. Pick the wrong hole type and you're looking at scrapped parts, failed assemblies, and frustrated machinists.
From basic through holes and blind holes, to threaded holes, counterbores, countersinks, reamed holes, and more — each type has its own callout symbol, machining method, and design rules.
📖 This guide covers everything you need to know:
✅ All 14 engineering hole types explained
✅ How to read and write hole callouts on drawings
✅ Machining methods for each hole type
✅ Practical design tips from real shop experience
Whether you're new to mechanical design or brushing up on the fundamentals — this one's worth bookmarking.
👉 https://www.madearia.com/blog/types-of-holes-in-engineering/
There are 14 common types of engineering holes, including Simple holes, Through Hole, Blind Hole, Interrupted Hole, Threaded Holes, Tapping holes, Counterbore Holes, Spotface Holes,Screw Clearnce Holes etc.
