Thread Anatomy- (In less than 5 min!)

A 3D animated video showing the anatomy of threads. Machining threads is difficult enough so its time to start with the basics. Watch this video to learn the basic anatomy of threads.

From Metric threads to standard Imperial, lets dig into what kind of threads are out there. We will answer this with a quick definition and general use of each individual thread. This is just the "Tip of the iceberg" but we all have to start somewhere! By the end of this video you will be able to identify and describe the following threads: Metric threads, Inch threads, Acme threads, Knuckle threads, Modified square threads, Sharp V threads, Buttress threads, Worm threads and of course Whitworth threads as well. Enjoy and Ill get started on the next video!

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My name is Nick Aycock and I love teaching machining tutorials! From philosophy to hands on machining.

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💡 TOPICS IN THIS VIDEO 💡
• threads
• threadanatomy
• machiningthreads
• whitworth
• buttress
• acme
• metric
• TPI
• knuckle
• sharpV
• Worm
• Square
• threadingonamanual

🔎 HASHTAGS 🔎
#threads
#threadanatomy
#machiningthreads
#whitworth
#buttress
#acme
#metric
#TPI
#knuckle
#sharpV
#Worm
#Square
#threadingonamanual

[JK-yfsx]

I've lived 74 years and had not been aware of this. I feel so lucky to have lived long enough to benefit from YouTube. Thank you ☺

[davidtimmerman]

great vid, but you forgot the most common use for the "acme" thread: used in roadrunner traps.

[arnokilianski]

Excellent video. I've spent almost thirty years operating manual lathes, and have cut many different types of threads.
There's one thread type that I've cut that you don't mention: Trapezoidal thread, similar to Acme, but with all metric dimensions.
Note to newbies: The differences between thread types are pretty obvious when they are drawn on paper or computer graphics, but not always so obvious when you are looking at a machine part, especially if it is worn.
Trivia: If you ever encounter an oddball thread that mixes an imperial diameter with a metric pitch, or vice versa, it was probably made in Italy. (It ain't stupid if it works...)

[InCountry]

Best five minutes I've spent in a long time. Thanks for the education.

[pl-mnro]

Here after are some additional information about Metric system

To find the drill size for hole that will be taped you just subtract the thread pitch.
Exemple:
M8 x 1.25 tap would need a 6.75 mm drill bit (8-1.25= 6.75)
Also every screw or nut revolution will make it progress 1.25mm
Also for small metric size you can find the wrench size you need by multiply the pitch by 10

Exemple:
M3 x 0.5 would be a 5mm wrench (0.5 x 10 = 5 ) and 2.5mm drill size

M4 x 0.7 would be a 7mm wrench and 3.3mm drill size

M5 x 0.8 would be a 8 mm wrench and 4.2mm drill size

M6 x 1.0 would be a 10mm wrench and 5mm drill size

M8 x 1.25 would be a 13mm wrench

[williemoon]

when Archimedes invented the screw in 521 AD the first person he showed it to said " Can i get one a half inch longer ? "

[ericscott]

As a purveyor of random knowledge, this video was highly satisfying. Immediately saved as a resource for later. Thanks!

[jimf]

The WHITWORTH thread of huge historical significance because it marked the introduction of standard thread forms by Joseph Whitworth. Although most people take standard threadforms and other manufacturing standardisation for granted, Whitworth's standard thread and his other standardisation ideas brought a massive step forward in manufacturing efficiency from which we still benefit hugely today. Although fallen from use for general engineering, most Youtubers, and many other people, use Whitworth threads every day since 1/4" Whitworth is used for the tripod mounting thread on most still and small video cameras and 3/8" Whitworth on large video cameras. The Whitworth thread form is used for British Standard Pipe (BSP) threads, now renamed ISO R and ISO G.

[onserfdez]

Thank You! The best descriptions I have ever seen regarding threads. Anyone getting involved with machining or mechanics should watch this and take note.

[briand]

Very Nicely Done, It's as if my machinery handbook came to life with a quaint song playing in the background. P.S. It's much more than 5 minutes with the pauses.

[brendocrampton]

Quite possibly my best time investment in YouTube to-date. Outstanding video, and the lack of voices or crap music was a pleasant change. Thanks for the education!

[countrymule]

Great video! My first Machinery Handbook I purchased was used. Was the 20th edition 4th issue printed in 1978 and I've still have it. Long before we had Cad system in the shop along with all kinds of new tech that was amazing to us old timers. Cleveland MoMax cobalt was the good stuff back then. Finally convinced the owner to puchase carbide inserts. He was blown away by the time we saved him. Now you talk about a old school machinist he was the OG.

[donalain]

i watched the entire video without even having particular interest in threads... just becasue the video was done so well.

[littlespinycactus]

I have no dealings with these items, so I have no idea what prompted me to watch this vid- but I'm glad I did. The graphics are superb, and the content was an education: I blush to admit I thought threaded things were much of a muchness. Now I know better. The complexity of their screwy anatomy has made my brain hurt (but in a good way) and henceforth I'll accord these humble fixings the respect they deserve. Thanks.

[APiesc]

Thank you for the information! Such content I've never had before. Now I know why screws are often so different.

[medicbabeID]

It's 0522 and I've already learned something today. Fantastic video! Thank you.

[npdlsi]

100% Excellent. SImple and to the point while informing with clarity.

[spacecase]

This video got a lot better once I realized there was no useful audio and muted it. Your animation of the threads spinning around was pretty, but it would have appreciated about one more second to read the text as it's not that possible to pause on the phone and still have everything readable. good presentation,

[flamencoprof]

A day class's worth of info. Excellent!

[alank]

A great video, some standards I have not come across before, many thanks for a top class tutorial ...