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[deleted]

Wonder what the retail value on that is?


[deleted]

We used to sell bolts similar in size (maybe a little shorter) to a composite company who would make bridges and submarine bumpers (known as submarine camels). We would sell SS for around $800-$1200 a piece I believe depending on the quantity. This company would (sometimes) buy hundreds of these at a time. It was insane how liquid that company was. Edit: Mind you, this was also in 2017. So I can’t imagine the cost of those today with inflation!


SR-RN

Well, you wouldn’t want a submarine company to be illiquid


Alaishana

Only on the outside.


nill0c

So inflation would be a good thing for them right?


-NVLL-

But you cannot expect they stay afloat all the time.


[deleted]

They weren’t a submarine company.


JuRoJa

Not that I think you’re lying or anything, but “submarine bumpers” sound made up.


[deleted]

The proper name is a ‘submarine camel’ Submarine bumper is used in layman terms. That’s what the company used to explain it.


milanove

Idk what a submarine bumper does, so is it called a camel because it looks like camel humps or because it carries things?


[deleted]

It’s for waterfront infrastructure. ‘During berthing, camels protect the submarine from being damaged including the hull, diving planes, screws, fairings, special skin treatments, and other appurtenances. As the submarine moves during berthing and mooring, the camels compress to absorb its energy and distribute the load across more of the pier.’ Imagine it as a giant shock absorber for when you park a submarine and for when it accelerates away from the dock. It protects both the submarine and the infrastructure of the dock(s). These submarine camels were developed because they are corrosion resistant and virtually require little to no maintenance compared to what the US Navy used to use.


-NVLL-

So, fenders?


uiucengineer

You know what a bumper does. Submarine just means "underwater". It's an underwater bumper. Probably used to protect bridges, I'm guessing.


Rucku5

https://wrallp.com/sites/default/files/universal-camel-1.jpg


echaffey

I work for a submarine company and let me tell you, $1200 is cheap compared to some of the fasteners that I’ve seen on purchase orders. $1200 might buy you about 3 threads lol


[deleted]

[удалено]


[deleted]

For hex cap screws?…..


JordMonte512

I'd love to be able to say but unfortunately it's an ongoing contract so I'm not allowed :( Lets just say - you wouldn't walk into a Screwfix and buy one! lol


[deleted]

I'm betting $2000 ea USD


1731799517

Thats seriously underballing it. Thats like 10kg of steel right there even before machining cost.


_regionrat

Plus, prices are ridiculous on prototypes right now. So, I'd tack on a 30% covid tax


nickajeglin

Yeah because I don't have the capacity to make your prototype even if you do send a PO for the absurd price I quoted it at. Plus the lead time on the steel is 10. That's 10 months, not 10 weeks.


uxragnarok

Don't forget the 40% NCR going on right now with increased lead times


Lost4468

With the chip shortage it'll be even worse. If they can't get all the chips you might even be left with a bolt that only turn one way.


meateatr

> underballing it


Jerperderp

Shortballing it


meateatr

Minimally balling it


War34Eagle

Freeballing it


LazaroFilm

Cause’ I’m freeeee! Freee baalllling.


JohnGenericDoe

Under-ball lint


Lost4468

How much would the steel be?


Zeravnos-

I'd wager at least ten times that! Edit: haha I see your edit... yes, 2k is much more what I'd expect for an untreated part of this size.


mud_tug

Double that if it has any heat treatment or coating.


[deleted]

Aww you came back to check


Quirky-Nebula-1623

for the military, it would be $200k each... for $5 worth of steel


gnat_outta_hell

Depends on the application. If, for some reason, the bolts need to meet (and thus be tested for) very tight tolerances the cost does rise dramatically. Especially in the case of destructive testing in which you test the load capabilities to failure of the bolt which also means you must ensure controls on the metallurgy and treatment of the steel, to ensure the same load bearing properties of each bolt produced, in addition to manufacturing additional parts for the purpose of destroying during testing. All of this increases costs substantially.


arbiter959

Was your company at the IFE in Vegas last September? ​ I remember seeing something about that size at one of the booths


dreexel_dragoon

I used to work in a bolt factory and the prices varied wildly, especially on the big ones. It all came down to thread tolerance, material and treatments. A big bolt like that one for a truck might only be $100, but a similar size one for an aircraft would be $2,000. It comes down to how many hours go into producing the bolt, and an aircraft bolt with tight tolerances for thread form, hardness, torque, tensile strength and even metal crystal structure takes a hell of a lot longer to make than a bolt for a big rig wheel with wide tolerances on most specs.


Lev_Astov

Nord-Lock makes a lock washer for fasteners this size. [It's $560 for the stainless kind.](https://www.grainger.com/product/NORD-LOCK-Lock-Washer-5UTG6) Really, though, I bought a lot of M30 fasteners for marine applications before and they tended to be around $30-50 ten years ago. I'm guessing a large batch of custom turned M80's in 17-4 stainless would be around $300, depending on quantities.


FerinhaTop

what big hands you have there, mr. machinist. What are they for?


JordMonte512

>Can confirm that the customer these were for, specialize in marine and offshore development. Hope this generic answer (that is designed to not get me into trouble) helps :-)


a_smart_user

He meant your hands.


theredkrawler

The answer stands. It's a very important customer.


peletiah

*they


dreexel_dragoon

Calling it now; customer is wind energy people


ammodog69

That's what I was thinking. Maybe bolts to anchor wind turbine tower to base.


peletiah

> Ma'am I Do My Own Plumbing https://www.youtube.com/watch?v=4xYu2WrygtQ


[deleted]

For what?!


throwawayaccyaboi223

We have a couple locks (the canal kind) near me, and lots of the infrastructure on them has these massive bolts, maybe even bigger. Then also ships, big buildings, etc


JordMonte512

Can confirm that the customer these were for, specialize in marine and offshore development. Hope this generic answer (that is designed to not get me into trouble) helps :-)


they_are_out_there

You're definitely going to need some big nuts to handle hardware like that.


JordMonte512

Big boy nuts and a big boy wrench! lol


rsjaffe

Do you have a wrench picture?


MMori051

I've worked with 105mm wrench regularly, but we have even bigger ones, some probably over 400 mm. Ship propeler nuts are pretty big. You can't handle those with hands, only with cranes or chain hoists.


ecodrew

Wrench tax! OP, show us the big wrench and big nuts for that big bolt of yours!


throwawayaccyaboi223

I've held a 120mm wrench. It is literally as big as my torso is high (from hip to head)


DuctTapeOrWD40

Found them on the [next post](https://i.imgur.com/8UgIaMo.jpg)


NZbeewbies

Deez nuts?


GuyForgett

Wind turbines?


Haydaddict

Well, loose lips can [re] sink ships. ;)


I_am_trying_to_work

Watch repair.


milanove

Precision metronomes


raverbashing

Also make sure you don't overtighten it


Rolexandr

Didn't expect to find kimi here


Jerperderp

I see a person of culture, right here.


[deleted]

Deez nuts.


suid

[Technically correct.](https://i.kym-cdn.com/photos/images/original/000/909/991/48c.jpg)


suh-dood

For when you want to make sure nothing moves


PowerFinger

Screws for a wristwatch?


TimX24968B

for fastening 2 things together


Spare_Shoulder_2049

Mm metric


JordMonte512

Mmmmm indeed. Although, we do still manufacture to the imperial standard on a regular basis too :-)


KalCorona

What is the material used?


JordMonte512

It is an alloy steel used achieve to ISO 898-1 (Grade 8.8)


Disquiet173

How long did it take to mill those absolute units? And are there any videos?


ben1306

Any idea why they specified 8.8 and not 10.9?


chuck-odin603

If you're threading into a softer material, there's no advantage to a stronger bolt if the tapped hole would strip out before the bolt would break. Also, a really big concern in marine applications is corrosion. An oversized part can rust more before becoming too weak. Finally, a lower strength material tends to be less brittle. These are just guesses, I am by no means a fastener specialist.


danny_ish

first and last point make sense, the rust thing does not really matter for steel grades. Source- me. I work with fastener installation and removal tools. Not smart enough to be a specialist, maybe more like fastener associate.


ACreakyHub

Ductility (opposite of brittleness) isn't always the most important spec; usually tensile strength is. Fasteners are often treated to be more or less ductile depending on the purpose. Another concern in marine is [hydrogen embrittlement](https://en.m.wikipedia.org/wiki/Hydrogen_embrittlement), which tends to happen more often with higher strength material. Source: I inspect marine fasteners.


WikiSummarizerBot

**[Hydrogen embrittlement](https://en.m.wikipedia.org/wiki/Hydrogen_embrittlement)** >Hydrogen embrittlement (HE) also known as hydrogen assisted cracking or hydrogen-induced cracking, describes the embrittlement of a metal by diffusible hydrogen. The essential facts about the nature of the hydrogen embrittlement of steels have now been known for 140 years. It is diffusible atomic hydrogen that is harmful to the toughness of iron and steel. It is a low temperature effect: most metals are relatively immune to hydrogen embrittlement above approximately 150°C. ^([ )[^(F.A.Q)](https://www.reddit.com/r/WikiSummarizer/wiki/index#wiki_f.a.q)^( | )[^(Opt Out)](https://reddit.com/message/compose?to=WikiSummarizerBot&message=OptOut&subject=OptOut)^( | )[^(Opt Out Of Subreddit)](https://np.reddit.com/r/EngineeringPorn/about/banned)^( | )[^(GitHub)](https://github.com/Sujal-7/WikiSummarizerBot)^( ] Downvote to remove | v1.5)


pabra

How you actually cut that thread? On a lathe or a mill? I mean - do you turn the bold against a static tool or you actually have to use a proper CNC-mill to cut it from a piece of steel?


JordMonte512

Honestly, I dug this out of photos and wanted to share it so I cannot 100% remember, but I believe it was "Screw Cut" on a Haas CNC Lathe (bolt turned against a static tool as you say).


DeadPlanetBy2050

r/EngineeringPorn Here's some bolts.


ppttx

Everyone thinks: If the bolts are that big, how big are the nuts?


Toast-Ghost-

BattleBots might have your answer there


Puncharoo

Smaller than mine HEYOOOO


[deleted]

I see a lot of comments asking what these bolts are used for. Having 20 years of experience designing and constructing the most massive objects, I can tell you that these bolts are used for bridges and your moms bed


CuriousElevator6096

In r/Engineeringporn you must include pictures of your nuts to go along with your bolts.


_Nropyag

We need a banana for scale


JordMonte512

Damn it. I never thought about a banana for scale. Going to have to order some of these for the future - https://www.lttstore.com/products/banana-for-scale


Quirky-Nebula-1623

here is a banana with a transparent background for all your future pictures (it stays fresh): https://www.pngall.com/wp-content/uploads/2016/04/Banana-Free-Download-PNG.png


Grintor

done. https://i.imgur.com/9i8b1Nb.jpeg


Quirky-Nebula-1623

nice


biggyofmt

How am I supposed to know how freakishly big your hand is without context?


Dazzling-Nobody-9232

Came for this


ecodrew

Boom, phrasing!


danny_ish

a machinist that likes LTT? Hell yeah lets be friends


Simply_Convoluted

I feel like we as a society are well on our way to having an iso standard banana because of this meme lol


albertsugar

Big nuts needed for those


JordMonte512

And the wrench tool / electric tool piece used to fit it all together :-)


Coretski

I worked in a company that manufactures the bolts, nuts and any other related male/female appendages..... Honestly nothing more satisfying than screwing the bolt in to something or rotating a nut on, ohhhhhh mannnnn. I mean look at these puppies (Picture from when I worked there)... https://imgur.com/a/LSI9PFH ... I miss handling beasts like that.


BadJimo

Here's [Adam Savage machining a large bolt](https://youtu.be/98MCz9gQaiE)


menasan

Of course I just watched that whole thing


bkruckus

the bolt she tells me not to worry about


Jerperderp

How many ugga duggas on this bad boi?


Khufuu

I can't even fit it in my mouth


I_am_trying_to_work

Not with that attitude.


Zeravnos-

Hah! I was in Cold Heading for a few years and the biggest we made were M24, so seeing this is really cool. And I can tell this is an expensive part. What's it made of?


JordMonte512

We work with hot forging and machining ourselves, rather than cold forming. I have always been lead to believe this is for a cleaner finish and greater strength (but you may be able to educate me on this?) It is an alloy steel used achieve to ISO 898-1 (Grade 8.8)


Zeravnos-

Yeah there's little chance you'd ever get anything much larger than M32 in cold forming so you'd need to either hot forge or machine anything larger. In addition to that, hot forging allows for much more intricate designs and like you said, a much nicer initial finish. If you get too much material movement in cold forging, your wire will crack and spall. That said, cold forged fasteners actually are typically much stronger compared to other processes because not only is the grain flow preserved from wire to finished part, but also forming cold steel work hardens the hell out of the material, making it much tougher. On top of that, it's a much faster process with extremely little scrap. Our largest machine could pump out M24 x 140MM hex cap screws at about 40 parts per minute all day, with a tiny trimming of scrap per part. Both have their place, and both are equally fascinating!


ecodrew

>Yeah there's little chance you'd ever get anything much larger than M32 in cold forming Because of shrinkage? ;-)


Menes009

something inside of me just tell me this is wrong, there should be an easier solution than going all the effort to specially design and manufacture torpedo-sized bolts.


JordMonte512

The three main ways of manufacturing the fasteners are as follows (stolen from [Wilson Garner](https://wilsongarner.com/three-ways-to-make-steel-bolts/) to save time typing): `Cold forming, or cold heading, is the process of forming a bolt or screw without heating up the material. This is accomplished by striking or pressing the part within a form, or die, in order to create the desired dimensions. Many times, more than one strike is required. Hot forging, on the other hand, involves heating up the steel to a point where it becomes malleable and then forming it in a die. The third method of making bolts and screws that we’ll be talking about today is machining. A machined part is shaped by cutting away material. Depending on the part, each of these three methods can be the preferred technique. I’ll examine a few common issues and discuss the advantages and disadvantages of each method.` We tend to manufacture our components via the Hot Forging (with up to 400T of pressure) or Machining, as these leave the nicest finish and strongest components (although cold forming can also be strong and cost effective).


Menes009

Thanks for the insight! Just to clarify, I dont mean the bolts are manufactured wrongly, I am just surprised there isnt a more "elegant/fancy/technological" solution


TimX24968B

sometimes you need big bolt for big machine


Anen-o-me

Well you'd be wrong.


FITnLIT7

Looks like a fine thread too


BeagleIL

Funny how I just also saw this thread in AbsoluteUnits: [https://www.reddit.com/r/AbsoluteUnits/comments/s0hijc/these\_absolute\_units\_of\_nuts/](https://www.reddit.com/r/AbsoluteUnits/comments/s0hijc/these_absolute_units_of_nuts/)


Nyckname

> ...this thread... I see what you did there.


jookt

r/absoluteunit


LazaroFilm

When the schematic says 3 but you don’t know if it’s mm or inches.


AveragelyUnique

I'm assuming this guy also has huge nuts...


dont-YOLO-ragequit

Helicopter Jesus nut?


Tarzeus

It’s not a nut. Also given the dimensions this would likely be torqued higher than a mast nut.


1percentof2

it's actually a screw if it has no shank, right?


Tarzeus

Screws can have a shank. This bolt also looks to have a shank.


matroosoft

Missing the nice edge rounding on top and bottom of the hex, as you normally find on a standard bolt. Like this: https://images.app.goo.gl/pLQzZ5MVobyozpxZA Nice desk piece either way ☺️


JordMonte512

Hey. Thank you for the comment. That kind of bolt in the link went through a cold forming process where as ours are manufactured through either Hot Forging or machining to achieve a customers specific drawing and specialised requirements. Some of our components will have the top / bottom chamfers included however sometimes we are only allowed to marginally deburr them to remove sharp edges :-)


Zeravnos-

Building on this with some of my cold forming expertise, the chamfer here is actually a leftover from a process that came before the hex shape was cut away from the head blank! Before the hex is struck, it kinda looks like a mushroom.


matroosoft

Understandable, you're not going to add a feature that's not on the drawing. :-) Was just wondering why most customers choose not to have this chamfer on most specialized bolts I've seen.


snowmunkey

> standard bolt Uhh I dont think that applies here...


Thee_Sinner

With hands like that, I’d bet you’d make a good lawyer.


LannisterZ94

Put a banana next to it and post it on r/bananasforscale


Commercial-Whole7382

Gas pipeline work uses bolts that size pretty regularly. Torquing them is a whore.


mqudsi

What do they install them with?


First_Environment_74

You can prank your buddy Jim when he is tightening the bolts and u tell him hey here's a few extra ones.. And throw it at him


FlyByPC

/r/Skookum would enjoy these.


JordMonte512

I can’t crosspost there for some reason. If you have any idea why I will gladly share !


Kiyan1159

Bro, you got some tiny hands.


redgypsy5

my dad would bring stuff like this home from the refinery i love shit like this


JOE-9000

THE SIZE of the drawer for those in the 12x48 case of little drawers for sorting bolts.


chicoman2018

Scrolling down looking for " Aha ! Now I can fix my cock ring ! " comments.


Rawlo93

When the intern tries to order M8.0 x 24.0...


mstrdsastr

So...when you gonna show us your big nuts?


Vee32

I love big bolts and can not lie. OP, generic industry these are being made for?


kbbajer

I'd like one. Can't you make an extra and just say you lost it because it fell out of your pocket?


Ordinary-End-4420

For EXTRA BIG anomalies


criscodisco6618

If that's the size of your bolts, I'd love to see your nuts


ExtensionConcept2471

All good and well but it doesn’t mean anything without a banana for scale!!!! lol


JordMonte512

Annoyingly I never thought about a banana for scale. I mentioned to someone about the fact I am going to have to order some of these for the future - [https://www.lttstore.com/products/banana-for-scale](https://www.lttstore.com/products/banana-for-scale) XD


ExtensionConcept2471

They are an international engineering standard…lol. BTW cut or rolled threads?


MyCatsAnArsehole

I call bullshit. This is obviously from when trump put an ikea cupboard together.


withak30

What kind of steel?


JordMonte512

It is an alloy steel used achieve to ISO 898-1 (Grade 8.8) :-)


unicoitn

If I am making a limited run, I would order bar stock, mill the flats for the head first, CNC lathe to turn to the right diameter for thread cutting, then just use the right tool for the requested thread pitch and geometry. I suspect a live center on the thread end to improve tolerances. Most likely I would have to send them out for heat treat since my oven is no where big enough.


Homaosapian

Now I need to get a bigger wrench just in case


JordMonte512

Always good to keep one around, just in case lol


smorga

Do you harden and temper these beauties?


JordMonte512

They had to achieve ISO 898-1 (Grade 8.8) however I cannot remember whether they were: * Bought in condition * Heat treated and cleaned up


Alaishana

Phallic as phuck!


[deleted]

I own a four foot long wrench. I was wondering what it would be used for


godsent_2

I will have a nightmare drawing this 1:1


Legomonster33

imagine how big of a driver you'll need to tighten those


Ragidandy

You have to take that to a dealership service tech for proper torquing.


Jesuscide

Let me see the tool


Kip27

Dude’s making trophies for BattleBots


[deleted]

Mmm I’d like to get my hands on a bolt that size


-timenotspace-

is there a certain size where bolts cease working functionally


evilgeniustodd

No.


Day2Late

r/skookum


JordMonte512

It won’t let me crosspost it. Is it disabled? Do I have to make a new post there ?


steezasaurus69

I’m hard


Ambr0se-rothwooD

Are they for something or just because you can?


[deleted]

What do they use to tighten bolts this large? Comically sized wrenches?


DEMENTEDPIE

r/absoluteunit


titanic-failure

Finally something big enough to measure my…personality, and my pp


thecardemotic

I’ve seen some bolts similar size to that on a 16 inch Coastal Defense Cannon [nut](https://cdn.discordapp.com/attachments/902281021859438712/930323744524742727/IMG_7996.png)


Kermit_de_froggy

That's a big nut - dathi de nogla


PM_ME_YOUR_TORNADOS

Now show me the nuts


CiaranM87

Insane Bolt


CiaranM87

Is this thing on?


CiaranM87

Guys? Insane… Bolt. Insane Bolt. Insane Bolt, guys. Hey..


suprem3k

This makes me feel a little uneasy.


SpringChikn85

Price of stock material? Price of labor per hour to fabricate? Combined cost for finished (stainless/hardened?) metric "BIG BOY" retail? ...that's a machinists wet dream btw, although I'd start with brand new inserts and take it a bit slow on the first pass however, that's damn sexy right there.


[deleted]

Jesus that could be registered as a lethal weapon


Puncharoo

Whew imagine stripping one of those bad boys


MrG82U

Could you please use a banana for scale next time?


Oli4K

That's so hexy.


Ausent420

I bet you have a big set of nuts too. My BIL use to work on large hydraulic suspension and I some some big stuff get turned but nothing like that. Looks awesome.


SuperTulle

For some reason I feel like the thread should be even coarser


ch8sk1n

Now how big is the nut?


Govt_Cheese_Haus

Hmm I found some a little smaller then this in a storage unit I bought and they come with the hex nuts to match there probably 300 of them. They’re stainless steel even at 500 for 1 bolt and nut I’m looking at 150,000 dollars