How Metric Bolts are Measured

Learn how metric bolts and screws are measured. I didn't understand metric bolt measurements and did some research. Find out what I learned. It's pretty simple once you know.
@HacksbyDad
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BCP screw thread gauge... amzn.to/3rHZh9Z
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This video is for entertainment purposes only. Rely on the information in this video at your own risk.

[@HacksbyDad]

For more... please checkout my Nuts & Bolts playlist... czcams.com/play/PL_WcGw5s6Cq6YK_s-NNne1838j25ijmii.html 😎

[@jpcaretta8847]

Pitch is not mentionned for standard only fine thread. Takes 10bmin tob now all standard pitch, 15min more to be able to determine the diam by sight. Nobody in the world needs tables , spevial rulers... Diam minus pitch gives the diam to drill. Get full metric drill set and throw away all inch crap ...
Divide costs by more than two in tools, supplies, hassle, errord...

[@keetor13]

Great great content and it gets right to the point. No long, unnecessary intros etc. Love it

[@HacksbyDad]

Thanks! Much appreciated! 😎

[@kobusswanepoel6447]

Not a cap screw!! Hexagon bolt.

[@Hank_E]

One additional "good to know" is if you need to drill and tap a hole just remove the pitch lenght from the diameter and use that drill size. M6*1 use 5mm drill, M8*1,25 use 6,8mm (difficult to find 6,75mm)

[@HacksbyDad]

Thanks! 😎

[@savedfaves]

Best video on CZcams about this. Thanks.

[@HacksbyDad]

Thanks for the kind words! I appreciate the feedback.
😎

[@edsalem5777]

Well explained, thanks!

[@chrismba777]

Simple and effective video! Thanks!

[@HacksbyDad]

Thanks! Much appreciated!

[@joshsosbee8820]

Super helpful, thank you!

[@dougpetersen7285]

This video needs more likes. So helpful. Thank you!

[@HacksbyDad]

Thanks! 😎

[@chopstickftw0121]

STRAIGHT TO THE POINT!!
subscribed , very well explained and simple and thank you :)

[@HacksbyDad]

👍😎

[@paulbiggs9279]

Quality video, no waffle.

[@HacksbyDad]

Thanks! 😎

[@freebornjohn2687]

This is a great video especially the part on identifying threads.

[@HacksbyDad]

Thanks! Really appreciate the feedback.
😎

[@slepper98]

Very informative, thanks for your time. Best wishes.

[@HacksbyDad]

Your welcome! Thanks for the feedback.

[@aggorjefferson8308]

Thank you very much! You saved another young engineer

[@HacksbyDad]

You’re welcome! Glad to hear that you found the video helpful. 😎

[@taurailovemoremakoni]

Thanks so informative

[@nitipuri]

Great video. It helped me a lot! Thank you

[@HacksbyDad]

You're welcome!
😎

[@Mrgramazzotti]

So helpful. Thanks a lot.

[@HacksbyDad]

👍😎

[@propoker1108]

Thank you, this video helped me loads

[@HacksbyDad]

👍😎

[@sandrarichardson2713]

Great video. Simple yet covered what someone needs to know. And good demonstration of using the tools. How bolts are measured...it was all good. Jesus bless.

[@HacksbyDad]

Thank you for the kind words! Much appreciated!
😎

[@RobertLupo]

Thank you nice video.

[@LoriJMarshall]

This was very helpful 😊

[@HacksbyDad]

Thanks! Glad to hear. 😎

[@EppingForest304]

Great explanation 👍

[@HacksbyDad]

Thanks! Much appreciated!

[@rollthers3157]

Excellent! 😀

[@mushlove6933]

Thanks for this perfect video

[@HacksbyDad]

You're welcome and thank you for the feedback!
😎

[@alastairtheduke]

This is so helpful

[@HacksbyDad]

👍😎

[@adamdejesus4017]

It can be confusing to look at thread pitch because SAE and metric are kind of opposite each other. An SAE #10 coarse is 24, fine is 32 (bigger number) but an M6 coarse is 1.00, fine is .75 (smaller number). The difference is "threads per inch" versus "millimeters per thread". You explained the metric side very well and now I have my head screwed on straight.

[@HacksbyDad]

Thanks! Never thought of it that way before. 😎

[@santino1345]

Thank You

[@miragairjet7436]

thank you for help.

[@HacksbyDad]

You're welcome. Glad to hear that you found the video helpful.
😎

[@spelunkerd]

Thread checkers that are arranged on a plate are good for the hardware store, but on the vehicle you often can't move the bolt or nut to the wall to check pitch. A more mobile option is a string of thread checkers, which come in either metric or SAE, strung together in a wire with both female and male threads. That strategy works best if you've got a threaded opening that can't be moved. Of course you can make your own from labeled individual bolts and nuts, but assembled thread checkers aren't that expensive and it saves a couple of hours to put it all together.

[@HacksbyDad]

Thanks for sharing... much appreciated! 😎

[@LLSZXYY316]

I gotta put one of these on the back of my bike on the fender so I have to use a screwdriver or just twist it all on?

[@RGRGJKK]

Pura vida mi amigo great video I am learn an interesting topic pura vida

[@HacksbyDad]

👍😎

[@Afrocanuk]

Thank you!!!

[@HacksbyDad]

You’re welcome! 😎

[@fredrickvoncold]

I didnt know it was that easy .

[@allancanlas38]

For open wrench 14mm is that M14 also

[@wasimraja50]

how we have arrived when its M6 multiplying 1.25 x4 mm? any guide
is there for this

[@gm2655]

Thanks 👍🏼

[@HacksbyDad]

You’re welcome!
😎

[@WennieBoy01]

thank you

[@HacksbyDad]

You’re welcome! 😎

[@infomattersmost]

Hi appreciate the video, anyway I can get that BCP meaurement chart. Notice you dont have a link for purchase. Or do i need to purchase the chart out right from you. Any help would be appreciated. John

[@HacksbyDad]

Thanks for pointing out the missing link. I got my BCP thread gauge from Amazon. Unfortunately, I just looked it up and it says that it is currently unavailable. Here's the affiliate link anyway... amzn.to/3rHZh9Z
😎

[@drengskap]

It's a lot easier to use a thread pitch gauge to measure pitch than trying to line the threads up with a ruler.

[@HacksbyDad]

Thanks for the tip! 😎

[@Oblimix]

Thanks, very informative.
One thing to point out is that your calculations only works if you already know the thread length, and so there's no real reason to measure it at that point. Better to instead measuring how many threads are in 10mm and divide 10 with that number to get the length? Or maybe 20mm?

[@mr.2minutes161]

thing is, i didnt even know if i use metric or imperial, if it fits, wing it!

[@colecoleman1499]

3 mm Allen key fits m5?

[@Hank_E]

On a counter sunk head and low style head yes, normal screw use 4mm allen key.

[@mupcountry7153]

How to know what number to multiply it by? Like .8 x 5 / 1.25 x 4 How to know the 5 & 4?

[@HacksbyDad]

Choose a number that will result in a whole number.
.8 x 5 = 4. So in 4mm, there should be 5 threads.
1.25 x 4 = 5. So in 5mm, there should be 4 threads.
Hope this helps.
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[@sukoshiudaykumar5631]

1/4*2 ????

[@keithd5181]

No. Diameter and Length is measured in MILLIMETRES, CENTIMETRES and then there are METRES. A meter is a measuring instrument.

[@HacksbyDad]

It is METER in the US. 😎
Where are you from?

[@deicats9561]

Why was it that the 20mm was not measured from the top of the head and the 30mm was measured from the top of the head

[@HacksbyDad]

Cap screws are measured from under the heads and machine screws from the top of the heads. I showed an example of a 30mm machine screw fitting under the head of a 30mm cap screw. 😎

[@muraleedharan7407]

യ്മലയാളം

[@vladimus9749]

I love how there are all these numbers and none of them tell you which socket to use. That would actually be helpful to print in the head instead of whatever nonsense 8.8 means. 🤦

[@MCRIZZLE1]

8.8 is the hardness!

[@Karol-le9bt]

thank you

[@HacksbyDad]

You’re welcome!
😎