How to Measure and identify Bolts

[@georgefetchko3127]

iam 70 years old thank you for helping me understand bolts & sizing which I learned this yrats ago

[@708mrmike]

Best one I've watched, explains it in an easy to understand way, thank you.

[@aubreycamachomd5717]

Thought I was back in the lecture room. Excellent and brilliant teaching and discussion.

[@mohsenesk6531]

Perfect. Exactly what I have been looking for. Thank you for such an amazing tutorial video.

[@kenfetsko720]

just got a job at nut/bolt supplier, trying to school myself with this new language. this video is exactly the type of information i am looking for, Thank you

[@gregsimcock]

A well-presented lesson on how to identify the thread, pitch, size and grade of bolts of Standard-American-Engineering and Metric, as well as their grade, is very informative. Another topic of interest would be the use of various pitches and grades. All round, an excellent presentation on the subject.

[@electricityenergymanagemen8487]

kzbin.info/www/bejne/eXvQfZl5nKiNoas

[@bubblywaters3116]

Dang that was awesome! Where have you been all my life!!! Thank you!

[@welshpete12]

excellent instruction , thank you for being so clear and precise !

[@MrFernandoBedoya]

Excellent video. It is important also to mention the fact that, for metric system a bolt can be identified as M6, M8, M8, etc. Thanks for sharing.

[@ActiveAtom]

Nice lesson well shared slow and accurate as we are here for the metric lesson so we can convey this for our videos to our audience with your style and abilities. The nuts was best lesson for us. Thank you, Lance & Patrick.

[@gwaeron8630]

Metric nut markings are based on a 24 hour clock by the look of it.

[@marcusmajors6196]

Have an apprenticeship test in the morning, thank you for the video

[@dirtybeanbag8121]

Thanks dude. Total newbie here, it helps a ton.

[@TheChemistDIY]

Man.. this was an excellent tutorial.. I always wondered how to tell the strengths of nuts and bolts, thanks so much.. I learned something new today.

[@electricityenergymanagemen8487]

kzbin.info/www/bejne/eXvQfZl5nKiNoas

[@gwaeron8630]

Thanks for the video. Very informative. I knew little now I know a lot. The metric nut strength indicators are very easy after pausing the video and realizing what they've done. It is based on the hands of 24 hour clock. So grade 10 was indicating 10 o'clock (2 hands - 1 at 10 and the other at 12). Grade 12 both marks were at 12 o'clock. Grade 14 was 12 plus 2.

[@RockaRecord]

Very cool!

[@kennisdamenace3268]

Great video, very clear and simple explanation.

[@ronnagar]

Excellent presentation & very interesting. Learnt a lot. thanks

[@mostefatayebcherif6798]

Thanks a lot sir for this interesting presentation , really it's useful information Best regards

[@malcolmyoung7866]

Never thought that Nuts and Bolts could be so interesting...

[@flojotube]

It really shows how determined the world has been to make things AS CONFUSING AS POSSIBLE

[@Iolis]

A most useful and informative presentation. Many thanks indeed.

[@jettc1853]

Fantastic video. This made it so simple!! Thank you

[@derekjscott1]

That was really fantastic - from Australia. Where we use metric but still have a lot of older imperial nuts and bolts. Just purchased a bolt gauge because of this video.

[@wyattandwill12]

Great video thanks! I’ve been having difficulty finding the nut for a ground point so I wanted to learn how the measurement system works to be able to buy a replacement, it had never clicked for me before but this was informative and not too difficult to understand. Note to others: take good pictures, bag your stuff by part of you can’t leave it in the car, and don’t take long breaks with out finishing a project.

[@Kevscancave]

Absolutely the best tutorial on nut and bolt identification! Thank You!

[@vitaminb4869]

This finally cleared all the confusion around bolt/nut sizes! Thank you!

[@AnkitTiwari-ky9rt]

Thanks A lot This Helps Me In My Job Workshop ❤❤

[@DonzLockz]

Great info, I was very confused before watching this video.🍻🤠🇦🇺

[@stevenl8687]

Great video Sir! thank you for sharing

[@richardquispe7395]

Amazing lecture. Thank you very much

[@latenttweet]

On a flat head (countersink) style you do include the head when measuring the length.

[@sparkysparty]

Yes you do

[@nopeacefordwicked5315]

Thanks alot. You are great teacher.

[@djgdjg6612]

Great video..Well done and clear explanations. Thanks!

[@troyjohnson7037]

Great video! I'm taking a small engine repair course and this helped. Thank you!

[@naderkeryakes9493]

Professional explanation, thanks a lot!

[@hikitech218]

In a metric bolt the number on the head is not considered a decimal number. Instead, it consists of two independent numbers separated by a dot. The first number indicates the bolt's tensile strength, and the last number represents the yield strength as a percentage of the tensile strength. So 10.9 means: tensile strenght= 1000 Mpa (=1000N/mm2) and it yields at 0.9x1000= 900 N/mm2. 8.8 is the base level, I have never seen anything less. 10.9 is the strongest You can get with corrosion protect coating. 12.9 is just bare steel. But I learned a lot about inch stuff. Thanks

[@BruceWSims]

Loved your presentation!! Clear, concise and informative. I was waiting to see if you were going to make any mention of Whitworth. Are they determined more like the Metric or the SAE. Thoughts?

[@rajeevkochuveettil8738]

Good information 👏👏👏

[@charleskutrufis9612]

Thank You, very informative.

[@magnumjohnson9628]

Thank you so much for this video. I'm prepping for my mobile hydraulic certification through international fluid power society and this is really helpful for the job performance station. Can you make one on hydraulic fittings?

[@music-cafe-4-you]

Great information thank you 😊

[@OnOff538]

Simple and great! Thx a lot🏆

[@DAVIDALVARADO-xw5km]

Excellent video

[@-KANE-]

Great work.. thank you sir.

[@gurcharansingh5938]

Very nicely described

[@larrynelson7839]

At 6:01 in the video the bolt is supposed to be 20 TPI. However, if you count the threads I only get 11 TPI. Does the picture not reflect the actual number of threads and we are supposed to use the number you inserted (i.e., 20) instead of actually counting the number of threads there?

[@lloydprunier4415]

I'm 80 years old and I wish they had kept the metric stuff where it belongs and left the USA with fractions that worked just fine!

[@fierakuitali9313]

If I have a Bolt that has this specs M12x1 26x83 what does mean . Has searched like this but nothing don't find nothing

[@ttcautotech]

The spec should be M12 x 1.25 x 83 That would a a 12mm diameter bolt with a 1.25mm thread pitch and would be 83mm long. They do not make a 1.26 thread pitch unless it is a special made bolt for a specific application. If that is the case it is special and would have to be purchased as a replacement part for that specific application. Also, replacement bolts would be sold in standard lengths such as 75, 80, 85, or 90mm. You'll probably have to pick one that is close to your application.

[@tristantaus4556]

Thank you I needed this.

[@Kambalage256]

Thank you for the lesson

[@ac4cars656]

Excellent explanation...

[@sanjayzaware1377]

18:25 The metric grades seem to represent numbers on a clock. Grade 10 shows 10 on the clock 14 shows 12 + 2 = 14 on clock.

[@jorgeordonezautomotriz]

Thank you for the video!

[@KingDavid-D37]

Threads are stripped on the bolt I need to replace and it's hard to get the pitch. The bolt has YM stamped on top. Any idea what that means..

[@DonzLockz]

Letters are usually the manufacturers initials. Usually to identify what company manufactured a bolt if it failed.

[@karimabdeldayem1879]

Thanks a lot,That is a very informative video. Although I am wondering how could you identify the thread pitch of a nut ?

[@Mixwell1983]

I have a string trimmer and ordered a universal brush blade kit and the nut is too large.. i am trying to find a reverse thread and find the pitch on the threaded rod to buy the right nut for it

[@Itspraveenka35]

Explained is so good

[@mrsemifixit]

Have any videos on the different applications of strengths/grades?

[@drewgormley6933]

This was excellent, thank you!

[@LasteventsBlogspotalsanea]

What are parameters that determine the strength of the bolt or nut ? Is it the material or something else?

[@mechanicandskills7215]

so now i know.....thank you so much :)..............now i got too watch it again

[@worldwideinfoblogs]

Great video and details

[@thetruth156real3]

The bolt is actually a set screw, set screws have a thread the entire length, bolts have a collar. In England any way?

[@trueaussie9230]

This video is for US consumption. The self-appointed 'leader of the world' is out of step with the civilised world, as usual.

[@thetruth156real3]

@@trueaussie9230 Yes he must be if only Americans can watch this clip. Well said!👍

[@ignaciogalvan5383]

Thank you guys very much

[@Dr.Gunsmith]

If someone still has problems with bolts or identification after this simple to understand lesson, they need to leave bolts to themselves 😂

[@ellemitchell7202]

Thanks that was great like your teaching can you explain the hardness of nuts versus bolts

[@marinoopen]

Great explanation, thank you

[@blaisefurtado5556]

Good explanation .thank you

[@williamhoward8319]

i have a bandsaw that needs a metric lh thred shaft is 70mm can you help me

[@kennydang57]

Thank you. Learning.

[@pamtnman1515]

excellent video

[@aaronalquiza9680]

how do i measure the bolt holes so I know what bolt to buy?

[@dreadknot2238]

use calliper so if hole already has thread and say 8.586 it's would be 8mm bolt . you have to keep in mind for threads pitch also when buying a bolt.

[@aaronalquiza9680]

@@dreadknot2238 hi, i used a caliper and was able to find out that i needed an M6x1.0mmx20mm bolt for my roof rack. i have confirmed this as well because the original part has the same measurements. I bought the bolt and tried to drive it but it won't get past the first 3 turns. is the thread pitch wrong? but 1.0mm is what i have and its what's in the oem bolt. im not sure if i should force it because i might strip the thread.

[@dreadknot2238]

@@aaronalquiza9680 might be the wrong pitch i belive it come in several numbers. good luck.

[@aaronalquiza9680]

@@dreadknot2238 the pitch is the same as what the OEM has. but i will look for a lower pitch bolt. thanks

[@dallash4884]

A good lesson - but correct is "National Coarse," - not "National Course" - a minor spelling error but one which might limit clear understanding

[@MrGus.1]

Great video, but would have been helpful if you had mentioned AN (army navy) nomenclature and markings.

[@chrishare3981]

now i know some stuff. very helpfull.

[@kenkwang]

Thanks for the tutorial!

[@giratina491]

Excellent tutoring

[@s.nagarajanbyzu3418]

Okay. But how to find in Allen head bolts

[@JohnSmith-ve3ro]

if a bolt has no markings on the head how can you tell if it is metric or sae?

[@ttcautotech]

The only way to tell without markings is to measure diameter and thread pitch. the thread pitch will either be metric or standard when measured with a thread pitch gauge. Sometimes you can tell by measuring the diameter, but this is less accurate.

[@trueaussie9230]

@@ttcautotech So, there's no chance it might be Whitworth or some other?!

[@LEGOCAMARO]

Easy to learn when put so simple

[@qaisarawan93]

Nice video.

[@arievianza]

Wow... this is very helpful! Would you be so kind as to provide us the PowerPoint file to download? That will make a very useful little handbook.

[@tareshgupta1095]

if a bolt is described as a "10-32 threaded rod ", how do we measure it ?

[@ttcautotech]

10-32 Describes machine screw sizes instead of bolts. Generally speaking anything less than 1/4 inch is described in this manner. the first number "10" in this instance describes the thickness of the screw in sheet metal gauge. the screw diameter is the same thickness as a 10gauge sheet of steel (around 9/64). The 32 means the screw has 32 threads per inch. It's interesting to note that many of these screws still look like bolts because they do not have a sharp tip and may still have a hex head. We just usually refer to anything below 1/4inch in diameter as a machine screw.

[@stenfordchiwandamira]

am a tool maker the plug diameter is 13.6 and must be impreil English but i lost my thread gauge but i did not check my TPI i what to buy tape then tape 1 hole itsgoing half way .is it uif Bsf its the plug of Ford ranger petrol

[@santoshKumar-ir4gf]

Great vidio

[@ted3681]

Fantastic, thank you.

[@pipefitters]

Excellent

[@EbruYldrm]

Thank you 👏

[@sohailinayat5336]

Well done

[@prestigeprestiges8311]

Thank you for this video

[@colinandrew9619]

Brilliant.

[@byronrose5574]

great job

[@mnoruzi]

good job man!

[@mohamedhafiz2052]

good one

[@greek595]

Good explanation thank you. Metric should be the only measure. Metric system should be named STANDARD. The Imperial System should be removed from face of this earth. An inch is 1/36 of a Yard. A yard is originates from 1 step of a roman soldier. A roman soldier? WTF? Its so ugly to say 3/4 of an inch. or even worse; 5/16 of an inch 🤢

[@buddhismful]

I agree with you.

[@sparkysparty]

That would be great except there are so many old cars and machinery out there that it's not going to happen. Ask yourself what shoe size you are and if you say something like an 11 that is an inch size not metric!

[@sh115067]

@@buddhismful if it works then it works. In Canada we use both. But I prefer SAE. The sizing just make more sense to me

[@pingpong9656]

I wish the they went into tapered pipe thread etc.

[@MultiTHUNDER00]

Thank you very much now i know!

[@cayrick]

perfect. Thanks!

[@shadowmanxyz7805]

Ty ❤

[@SRSBZZ]

Thank you!

[@williequinlan4946]

Thank you👍✅

[@KJAAICH2]

Thank you sir !!!