One of my good customers asked me to source some stainless cap screws for them, and I can't find anyone that has these in fine thread.
Looking for:
18-8 Stainless steel low head socket head cap screws, 9/16 thread length under the head, 3/8-24 thread.
I can find these in 3/8-16 but not in 24 pitch.
I have calls in to a local fastener house, as well as to Unbrako direclty. Have not heard back from either just yet.
Does anyone have any ideas? I already tried MSC, McMaster-Carr and Aircraft Spruce (as well as a bunch of Google searches) I need 80 of these suckers in my hands by the end of next week.
Any help is appreciated! [thumbsup]
These folks have the thread you want, but not in 9/16 length. 5/8 with a washer?
http://www.boltdepot.com/ (http://www.boltdepot.com/)
Here's a place near me: http://douglasind.com/ (http://douglasind.com/) Also try Fastenal http://www.fastenal.com/ (http://www.fastenal.com/)
www.mcmaster.com (http://www.mcmaster.com)
you could have them fabbed as a last resort.
???
Try holo krome. They make great fasteners.
http://www.holo-krome.com/catalog.html (http://www.holo-krome.com/catalog.html)
Thanks for the help everyone. Ill give those links a shot and see what happens. . .
www.daytonabolt.com (http://www.daytonabolt.com)
Send a PM to motogpfan, he might know more about this, but I have heard they have about anything you could possibly need.
I just tried these links, and made a couple phone calls.
Not looking good.
Fastenal doesn't have, holo-krome seems to not make any stainless stuff, mcmaster doesn't have the thread pitch, etc.
I have a call into daytona bolt and they're checking with their vendor.
:-\
Socket head cap screws are generally available in 1/8" increments, which is probably why you're not having any luck. ;)
McMaster's number for a 5/8" unit: 92196A356
A lathe will buzz that extra sixteenth off in no time, if it truly needs to be that precise.
Edit: Ah, low head. That could be a stretch. You could turn the head height down a tad, assuming it would be enough.....
Well, this customer takes screws like this, and then turns the end down to some diameter and then resells them to their customer.
It's sounding like they may have to modify more than just the thread side. . .
Got a call back from one supplier. . . no quote :(
So it seems these particular screws are unobtanium
My friend purchases a lot of hardware for his company. I'll see if there is another supplier we're missing here.
Cool, I'm all ears (or in this case, eyes)
;D
Quote from: Monsterlover on October 27, 2008, 03:20:34 PM
Cool, I'm all ears (or in this case, eyes)
;D
Considered getting quotes on manufacture?
No because they need 80 pcs by the end of this week.
Custom stuff is weeks not days, and the qty price is never good at only 80. . . they probably wouldn't make less than thousands id guess ;D
Or do you mean manufacture by someone other than Unbrako or Holo Crome or some other big maker?
Quote from: Monsterlover on October 27, 2008, 04:10:17 PM
No because they need 80 pcs by the end of this week.
Custom stuff is weeks not days, and the qty price is never good at only 80. . . they probably wouldn't make less than thousands id guess ;D
Or do you mean manufacture by someone other than Unbrako or Holo Crome or some other big maker?
Maybe the local machine shops can work something out with you. Buy something close, have 'em set up a jig and fix 'em up in a jiffy. It'll add to the cost, obviously, but-times are tough-maybe you can find someone to moonlight and do it. Only issue being stainless
sucks to machine.
First rule of engineering is to never make what you can buy, but if you can't buy 'em......
Quote from: somebastid on October 27, 2008, 04:17:07 PM
Maybe the local machine shops can work something out with you. Buy something close, have 'em set up a jig and fix 'em up in a jiffy. It'll add to the cost, obviously, but-times are tough-maybe you can find someone to moonlight and do it. Only issue being stainless sucks to machine.
First rule of engineering is to never make what you can buy, but if you can't buy 'em......
[laugh]
I sell to machine shops, and my customer that needs these is one as well. They'd loose money making these themselves when they can crank out $75 to $500 an hour on their CNC machines ;D
All they machine is stainless and worse. Actually all their SS is high tensile valve material. They also work with Titanium, inconel, hastelloy and all the other fun materials.
Cutting tools have really improved over the years, stainless is cake now (for the most part, sometimes there's a little trouble) and those guys are good at it because it's all they do.
[laugh] First rule of Monsterlover is never buy what you can make [laugh]
Ok got another one for ya. http://www.thruwayfasteners.com/index.htm (http://www.thruwayfasteners.com/index.htm) I'm PMing you right now as well.
Set screw with a thinned-down jam nut?
Length isn't an issue if they're tailoring the end anyway.
Second rule of engineering is to not design yourself into a corner where you need an oddball fastener [roll] (but I digress...).
Quote from: Speeddog on October 28, 2008, 10:27:58 AM
Second rule of engineering is to not design yourself into a corner where you need an oddball fastener [roll] (but I digress...).
+1
I've never designed myself into a corner.... ;)
Quote from: Speedbag on October 28, 2008, 11:05:48 AM
+1
I've never designed myself into a corner.... ;)
Funny, I've never done that either. [laugh]
<soapbox>
I've found a strong correlation between boneheaded design/engineering and designers/engineers who aren't personally involved with fabricating, assembling, and maintaining what they create.
If you've had to suffer with what you've botched, it's extra motivation to put in the work on the front end, rather than [bang] at the finish.
Perhaps there's a perfectly good reason for the dilemma the OP is faced with, but it sure smells a lot like designer ADD.
</soapbox>
It seems that the thread pitch changed from 3/8-16, which is available readily, to 3/8-24 which is unobtanium.
Current plan is to use 3/8-24 regular head SHCS and turn the head down. Customer ok'd that this morning.
;D
Also, thruway fasteners no quoted. . .
Quote from: Speeddog on October 28, 2008, 11:29:55 AM
I've found a strong correlation between boneheaded design/engineering and designers/engineers who aren't personally involved with fabricating, assembling, and maintaining what they create.
If you've had to suffer with what you've botched, it's extra motivation to put in the work on the front end, rather than [bang] at the finish.
Definitely. I've seen some pretty stupid things over the years (that I, thankfully, had nothing to do with - but had to fix).....
Quote from: Speeddog on October 28, 2008, 11:29:55 AM
Funny, I've never done that either. [laugh]
<soapbox>
I've found a strong correlation between boneheaded design/engineering and designers/engineers who aren't personally involved with fabricating, assembling, and maintaining what they create.
If you've had to suffer with what you've botched, it's extra motivation to put in the work on the front end, rather than [bang] at the finish.
Perhaps there's a perfectly good reason for the dilemma the OP is faced with, but it sure smells a lot like designer ADD.
</soapbox>
I think every engineer should be required to build the first unit...
and then repair the first broken one.
I bet things would change. ;D
Texas Screw Products
http://www.tsp-tx.com/ (http://www.tsp-tx.com/)
If they don't have it they can get it made.