In this short and powerful video, we explain all major thread profiles used in mechanical engineering and manufacturing. You will learn the purpose, angle, and application of:br br • International Metric Threadbr • American Standard Threadbr • Unified Threadbr • Whitworth Threadbr • Pipe Threadbr • Knuckle Threadbr • Square Threadbr • Trapezoidal Threadbr • Buttress Threadbr br This video helps beginners and professionals clearly understand which thread is used where — from fastening to sealing to power transmission.br br If you like this video, please subscribe to our channel for more engineering knowledge and stay updated with practical mechanical design concepts.