how to calculate bolt tightening torque

[@TushhsuT]

Nice. Short, informative and clear. Thank you!

[@najibahmadi7705]

Thansk for a very good and detailed explanation. I appreciate if you could share where you get the tables.

[@rohitnarayan6509]

Pls do an example calculation also, to verify wether viewer will be doing correctly or not. Presentation is really very good 👍

[@gladsonjoseph8247]

You sir is a genius.

[@hemantpandey9676]

The presentation is quite amazing. If possible.. please focus on improving voice quality. Waiting for your next video ! : )👍👍👍

[@technoworks.]

Thanks for your valuable feedback

[@sooriya-pp6uz]

good explanation bravo.May i know in which code you use as reference .

[@bgajul99]

good presentation....what the difference between non permanent bolted joints vs permanent bolted joints ? thx..

[@onurkoc2296]

standard screws and bolts can be detachable but there are fasteners used in aerospace industry like hi-lok, hi-lite. these fasteners are also threaded. but they can not detachable after installation.

[@be_good_citizen]

Thanks for such a wonderful video.. presentation and animation is really nice.

[@technoworks.]

Thanks mohit

[@thiagob.4706]

Very good explanation. Greetings from Brazil...

[@chandanabhishek847]

Good explanation bro. Can you please explain from which standard you are taking reference of nut K factor.

[@youratelier8638]

Nice vide, thanks. In minute 4 which standard you follow?

[@zakher515]

thanks a lot Dear good explanation May i know in which code you use as reference for table

[@abdulmujeeb9489]

Nice presentation

[@coskunklc360]

Reupload the spreadsheet please? Thanks for great video.

[@brenk3381]

dividing by 1000 is to convert mm to meters, this step is not needed if you keep your input values the same as the output values i.e. Newtons and meters, otherwise very good

[@muhammadmudassarjaveed6046]

How many no of thread need to be outside after bolt, after full tightening? Which stander deal with it

[@mohamedthoufeek8486]

Brother, How to calculate threatened length using clamping force

[@ravikumarkanagaraj690]

Hi, thanks for great video, explanations are very clear. Could you please tell from where u took the reference for pre load calculation. 0.75% of proof strength for non permanent joint is there any iso standard?? Currently i am checking for A4 70 grade bolt, there proof strength is mentioned as stress at 0.2 permanent strain is it correct? References for the formulas would be really helpful. Thanks

[@technoworks.]

material which doesn't exhibit a clear yield point, for those materials proof strength is often considered as stress corresponding to 0.2% of permanent strain. some time it is also expressed as offset yield strength or 0.2 yield strength.

[@technoworks.]

It is standard engineering practice. You will find it any fastener handbook.

[@ravikumarkanagaraj690]

Thanks for the response 🙂.. for 75% is there any references?? For 8.8 grade bolt proof stress and stress corresponding to 0.2strain both are available in iso standard. Value is 600 and 640 respectively so i am getting the doubt whether stress at 0.2 yield is Same as proof stress? Without the reference i am unable to derive the conclusion that's the reason. Thanks

[@technoworks.]

Read preload joint analysis methodology for space flights by NASA. also refer a book "intoduction to the design and behavior of bolted joints"

[@technoworks.]

Also refer this video kzbin.info/www/bejne/Y5ClqaGegd6ofpo

[@Nikunj0Shah]

Please make more videos like this which can be useful for mechanical engineers

[@AnimeBakugo123]

Can you please share the nut fator pdf and the spreessheet ?

[@nithinj1991]

Very useful video 👌🏻

[@josephnkhata3392]

How do you calculate the required torque when you are tightening a material like rubber? Like a flat rubber seal being tightened with bolts against a metal surface

[@tmtan1303]

Use Shigley approach where you check for stiffness of bolt and clamped parts

[@dickiejoe01]

Thanks it is a great explanation.

[@ghilmandilshad9495]

Can you please explain how to calculate force which will make the bolt pull out of the nut Failing its threads!

[@tmtan1303]

For standard bolt, VDI 2230 or machinery handbook I think is good to go. For customized thread, it can be treated as beam theory, where beam section height is thickness of root thread and beam section width is the thread coil length.

[@jrohit1110]

This is an excellent explanation. Could you add links in the description to the tables used in the video?

[@technoworks.]

let me know which table just mention time. I will give you the reference

[@YuFan00]

@@technoworks. I think he's talking about the table at 1:35. Thank you!

[@pavankumarjavalkar3624]

Hi Rohit, if you are asking about K table then it has been derived from a book "John H. Bickford -An introduction to the design and behavior of bolted joints". This you can see at the top side of PDF at 1:35. time into the video. You need to closely observe it 😊.

[@timmu8996]

Your explanation is good Can u pls provide information where did u get all the reference paper

[@technoworks.]

Its a general engineering practice. You may refer engineering handbooks and standards on fasteners.

[@SupriyoNaskar-eo5kc]

Why 0.938 is deducting from Pitch during stress area calculation of bolt? Please explain.

[@technoworks.]

Download spredsheed for tightening torque click following link. docs.google.com/spreadsheets/d/1SplyfYS25ulU_HBBnu1mhDRl1yrFa0Hc/edit?usp=sharing&ouid=104394080873650819842&rtpof=true&sd=true

[@nathaniel-zo8ke]

cant access this link

[@youratelier8638]

Spreadsheet was deleted?

[@AnimeBakugo123]

It doesnt work anymore

[@MIC-wc4wf]

Can you please send us a spreadsheet again, this link does not work anymore/

[@huzaifabavar6550]

Can you please tell me that if screw connection loaded by 22kN force and coefficient of friction for dry Surface is 0.16 Then which screw size is suitable like M10 or M12 ???

[@muhammadabdulahad1215]

Can you please tell me the book from which you take this content? Thanks in advance

[@MrThuyavan]

what could be torque vlvue for nut size30x2.00

[@technoworks.]

first let me know the bolt grade. if we consider 4.8 grade , torque will be 1040 NM

[@rohithkodasgolli9175]

Excellent

[@technoworks.]

Thanks

[@genielilao381]

Sir, where did you get the forumla especially on the factor for the Pitch?

[@technoworks.]

Available in fastener handbooks

[@genielilao381]

@@technoworks. the 0.9something?

[@hirenchauhan7730]

Area formula is wrong, It should be = Pi/4 * ((D- (.9742/pitch))^2

[@mohitjoc25]

Sir plz show us real calculation on bolt..I love this make more vedios

[@rahulmalandkar962]

great man

[@rupeshpatel1137]

Sir please calculate 20mm Dia Bolt ( F ) Value. Pitch 2.5m / Gr. 8.8 If possible please calculate Minimum / maximum torque in Nm. M20 Bolt. / Gr. 8.8 / Pitch 2.5m / K= 0.15 / 600 Mpa. We use this bolt in Railway Bridges. This is a High strength friction grip Bolt.

[@lukeanubis]

How to get nut factor pdf or that table

[@ChandrasegaranNarasimhan]

Why can't we have magnetic bolts and nuts?

[@rajvindrabeniwal8249]

👍👍👍

[@preethamh1361]

Thodasa volume badavo yaar

[@ohnemar4285]

What language your cast speaks?

[@garbo8962]

Maybe Pig Latin but this person is one smart dude.

[@Nur_Md._Mohiuddin_Chy._Toha]

👍👍👍👍👍

[@abhimanyukatyal3383]

👌

[@razakismail8405]

Sound not clear.

[@davidklausen1316]

nut factor

[@rahulmalandkar962]

my customer is calculating clamping load , can you tell me how can i calculate clamping load for M16 12.9 class bolt with M16 nut

[@technoworks.]

For class 12.9 M16 bolt, tightining torque should be about 365 N-m. Assumed K=0.2 for non plated steel bolts and proof strength = 970 N/mm2.

[@georgmeiner267]

Nach fest kommt ab!

[@StrongFreeLovin]

For the kind of knowledge you're trying to lend it's terrible quality audio.

[@technoworks.]

Apologies.

[@robertsalazar5061]

your voice can barely be heard, otherwise good work.

[@Carzwonderland]

Ur voice is toooooo looooow

[@arbrazali7315]

Audio quality is bad

[@tjalerkon3680]

Speak loudly Siiiiiirrrrrrrrrrrrrrrrrrr

[@iamdonniem]

audio is very bad.

[@technoworks.]

My apologies

[@jesuscastillo1375]

Your English is hard to understand

[@Hamid-az]

It wasn't fast.

[@nddmechaniii8586]

Y

[@nasir97uet]

Does it really matter for Engg solution. Muslim No. Muslim. Btw. Wow explanation. Kammal

[@sharathp3809]

Why Hindu muslim discrimination in the comment section, just be worried about engineering Solutions

[@Hamid-az]

Are you afraid of Muslims? I just asked a question as others ask sometimes. If you don't want to answer, that's fine. For me, Hindu or Muslim does not matter. Must be human. Good luck​@@nasir97uet

[@Hamid-az]

​@@sharathp3809 Are you afraid of Muslims? I just asked a question as others ask sometimes. If you don't want to answer, that's fine. For me, Hindu or Muslim does not matter. Must be human. Good luck

[@foxfinder4863]

try to speak english, can't understand one word you are saying.