Bolt Size How To Figure out the size you need video

[@ItsPouring]

*YOU* just made my life so much easier - *THANK U Handyman Problem Fixer!!* 🛠💜👍

[@handymanPF]

No problem. I’m glad it helped you out. I greatly appreciate your comment and also thank you for watching.

[@teddekker3383]

After all these years ... Thank you !! A simple and effective explanation, also using the bolt/nut guide template/gauge :-) Ted

[@handymanPF]

I’m glad you found it useful. Thanks for watching and commenting. Please like share and subscribe. Also please hit the notification tab 🔔

[@michaels1997]

Great explanation - simple and brief - I'm off to find the gauge now, many thanks from the UK!

[@handymanPF]

Thank you. I appreciate you

[@Order-in-Chaos]

0:59 Three lines is a grade 5 not 6...

[@handymanPF]

Yes you are correct. I did mistakenly misrepresent the bolt grade. Thank you. Also thanks for watching and commenting.

[@CarlosMedina-wf9mj]

Wow! Finally I understand!

[@l2007303a]

Thanks for this video god bless

[@handymanPF]

No problem. I’m glad you found it useful. Thanks for watching and commenting, I greatly appreciate it.

[@SolitaryBro]

Thanks for this video. Very handy indeed!

[@handymanPF]

No problem. I’m glad you found it useful. Thanks for watching and commenting. Please like share and subscribe.

[@jimmunhall]

Order in chaos is correct, 3 lines is grade 5 not 6

[@Madhadsman]

Thanks for the informative video.

[@handymanPF]

+Madhadsman thanks for watching and commenting. I'm glad you liked it. Please like, share, and subscribe.

[@gordiebr]

awesome video very thourough and helpful, thanks.

[@handymanPF]

Thank you very much for commenting. I’m glad you found it useful. Please like share and subscribe.

[@anonintellect9882]

Excellent video, helped me out, really well explained and shown to the camera, good job, thanks.

[@handymanPF]

+Anon Intellect thank you. I'm glad it helped. Thanks for watching. Please like, share, and subscribe.

[@marjiemiller]

Very nicely done Professor HandyMan!!! :)!!! :D!!! Now I won't sound so stupid at Home Depot!!! :)!!! :D!!! Thank you!!! :)!!! :D!!!

[@handymanPF]

+Marjorie Miller :) I'm glad you found it useful. I greatly appreciate your comment. Thank you very much. Please like, share, and subscribe.

[@doityourselfdave]

LOL, 3 lines... grade 6, 6 lines.... grade 8. What genius devised that naming and marking convention !

[@handymanPF]

D Casserly No idea, I wondered the same thing.

[@roobear5357]

It must have been a committee

[@glennfrazier4873]

Thanks, very informative.

[@handymanPF]

+Glenn Frazier I m glad it helped. Thanks for commenting and watching. Please Like, Share, and Subscribe.

[@dohc1974]

+handy man Thank you for the video! Ive learned a lot. What determines the "M" size bolt? Im trying to buy some valve cover bolts for my motor and the sell is asking me if they are M6 or M8. Where can I learn about this?

[@handymanPF]

Metric, I believe. the numbers are the sizes. Thanks for watching and commenting. Please like, share, and subscribe.

[@shuyuan901]

Good thanks

[@dwaynelewis1880]

How do you determine the correct socket size to use when tightening or loosening a bolt given you only know the bolt size/diameter of the bolt?

[@thereviewer4173]

If the bolt is a metric, then use metric tools to remove it. However, sometimes a SAE tool has a tighter fit (or the other way around). I personally go by the tightest fit regardless of metric or SAE size as long as the tool doesn’t fit way too tight. I don’t want to have to waste time separating a socket from a bolt or nut. Also, different brands of tools have slightly different sizes. For example, a 10 mm Stanley tool may be tighter than a 10 mm Pittsburgh tool.

[@Mouse6677]

What about strengths for what weight it can hold and coatings for outdoor use etc....great vid btw!!

[@handymanPF]

The strengths are stamped on the head of the bolt. As for color for outdoor use, I use stainless which is a silver color , ( note ) but just because it’s silver does not mean it’s stainless. And another common one is Zinc and those colors vary. Thanks for commenting. Thanks for watching. Please like share and subscribe.

[@Mouse6677]

@@handymanPF Thanks for the reply....guess I need to rewatch your vid and make some notes, to get a better handle on bolt knowledge, not to mention get my hands dirty with some hands on bolt use!!!! 😀

[@raybin2086]

How do u know what size wrench u should use with a 12 mm bolt?

[@thereviewer4173]

If the bolt is metric, then a metric tool was designed for it. However, sometimes you can find a SAE size tool with a tighter fit than a metric (or the other way around).

[@segunvictorawoma2888]

How do we know the size of but across flats to use for a bolt

[@handymanPF]

Could you please rephrase your question? What do you mean , “ across the flats “?

[@nasehatique9087]

Where we will get this instrument

[@vidneypopples]

how do you determine the thread pitch of the bolt receptacle or nut?

[@thereviewer4173]

If you know the bolt measurement, then the nut will be the same measurement.

[@afghosting8772]

so 3 lines is 5, and 6 lines is 8... who thought (or didn't) think this up!?!?!?!?!?

[@handymanPF]

I wondered the same thing myself. Thanks for watching and commenting. Please like share and subscribe. Also please hit the notification bell 🔔 to stay updated with new videos. Thanks again

[@afghosting8772]

@@handymanPF I recently started work at Lowes, and I find the naming conventions incredibly difficult. But your videos cut through some of the clutter. Thanks.

[@handymanPF]

I appreciate that and I am glad it helped out. Thank you

[@SarahDigsHockey]

My guess is the guys who came up with 10 hot dogs and 8 buns in their respective packages.

[@BoltRM]

The ones with 8.8 = grade 6, 10.9 = grade 8. Except on Tuesday ;(

[@relaxyourself5551]

I have a question. How to select a bolt based on load? I have 12mm ms plate dia. 150 It is going to fixed in connecting flange with the same dia. How to determine the size of the bolt for this flange? Customer is asking for 4 bolt, but and washer. PCD is 50mm from centre.

[@handymanPF]

When in doubt, use the strongest grade bolt you can get. That’s what I do. I hope this helps. Thanks for watching and commenting. Please like share and subscribe

[@MrDoYouWannaBeOnTop]

for a 6 inch wheel diameter, what size should i use?

[@bikramjeetsingh7444]

how to differentiate the bolt whose whole length is threaded to the bolt whose some part of the length is threaded ?

[@roycarter738]

Can you show a video to check hole size without bolt?

[@lolnepal]

i almost added 2 for everyone line... that 3 line tricked me... manufactures should put their names on the bottom not on top, on top just put one freaking no.... lol.. thank you so much.

[@Bravo4J]

lolnepal why are you using ... ?

[@Bravo4J]

FYI everyone used metric including the USA. Because a lot of people were uneducated the USA changed to imperial because the citizens could use their fingers to do the math eisier. A lot of people think the 'other places' changed to metric instead. Which makes it even more crazy because the metric system is based on 10. We "Americans" are too proud to admit we made stupid choices.

[@DennisNedryisStillAlive]

They should laser the thread pitch on the head of the bolt

[@handymanPF]

That would be great

[@TwinTimber]

so what does M3 - M4 - M5 and so on with "D" Other markings are A2 and so on !!

[@264rockstar]

Confused.. I measured a bolts thread pitch at 32 (US) and it also fits at .75. (METRIC) The diameter is 4 metric and 8 (US) Question is.. what am I doing wrong? And how do you write this out when ordering a bolt? TX

[@handymanPF]

Ok, check the top of your bolt does it have lines for grade marks? If so then it is standard. If it has numbers on the top for example 8.8, 9.8, 10.9, then it is metric. Your not doing nothing wrong some of them are close, until you start to run them in then they will be either to tight or too loose. Also if you can get the parts diagram for the specific project your working on, it might already have the specs for the bolt in the parts diagram. Another example is, put a socket on the bolt head and see what fits snug on the top without any play. For example 1/2 inch and 13mm sometimes are mistaken. A 13 will fit on a 1/2 with a little play and a 1/2 inch will fit snug on the spec size. Which ever fits snug thats what it is being metric or standard. I hope this helps. Thanks for watching please like, share, and subscribe.

[@iamsal]

3 radial line head markings is a grade 5. It not a grade 6.

[@handymanPF]

+Salvatore Liquori yes, this was a mistake on my part that was pointed out several times. Thanks for watching and commenting. Please like share and subscribe

[@lynnkowalla1315]

I have bolt 2mm diameter at bottom of threads....read 1/2 hr and can't tell bolt sz...arghh 😠😠😡

[@shellite]

How to figure out the size you need, IF you have the tool in the video... stupid title.

[@ellsworthm.toohey7657]

Thus gadget is useless in metric. A good mechanics knows directly the size and pitch by looking and eventually use his ruler.. So simple in metric. 8.8 80% elongation, 80 kgf/mm2

[@handymanPF]

This is a ridiculous comment, I can't help but to state that. So only bad mechanics use these, false. Either your someone just talking smack or either you work on the same type of vehicles over and over again, then in which case you would know the size by looking at it. But people like myself that work on cars to machinery don't always use the same type of bolts and have various sizes in standard and metric that have to be ordered. So what might be useless to you is not useless to the next guy. Thanks for commenting and watching.

[@ellsworthm.toohey7657]

No, this tool is useless outside of the US ! Metric bolts are the same standards all over. US manufacturers because of the crappy inch system devised their own standards thus complicating an already messy system. Be it in the gun industry, the automobile, heavy machinery ... So this "tool". Anyway the Ford, John Deere, Caterpillar etc... end up switching to metric some time ago. Since 1860 US scientists have pushed for metrication. Now, the US pay the price of stupid politicians stubbornness. Some idiots thought they would protect the US market from imports. Wrong !

[@BristolMatt]

Terrible vid.

[@handymanPF]

How so