Who sells self-tapping machine screws? - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 15 Old 12-24-2008 Thread Starter
Senior Member
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,321
Thanks: 4
Thanked 128 Times in 125 Posts
Rep Power: 11
   
Who sells self-tapping machine screws?

Honest, there is such a thing. Actually several types, they are machine screws that are slightly tapered with one or more cuts at the tip, so they will self-tap and bite into sheet metal, and then snug down on a regular machine screw shaft.

I need a dozen 6mm (size) by 8-10mm (length) to replace some 4x.7mm machine screws that have stripped out. Don't really care if that's 6x.8 or any similar thread--I just need a fine thread self-tapping machine screw. Actually, a dozen of them, and the only supplier I found runs them off in lots of a thousand. (Ulp.)
hellosailor is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 15 Old 12-24-2008
Not So Senior Member
 
Sapperwhite's Avatar
 
Join Date: Oct 2006
Location: Maryland
Posts: 2,504
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
     
Try these guys:

McMaster-Carr

or these guys:

Home | Fastenal

McMaster Carr has about everything, and if they don't have it they can get it for you. I use them all the time and they are one of my plants most used vendors. On the McMaster site, the search engine is in the upper left.

Edit:
Search McMasters for "tapping screws" and you see details of all the different drives types, head styles, and tip patterns. I think what you are looking for is there.

Dictated, but not read.

Last edited by Sapperwhite; 12-24-2008 at 05:49 PM.
Sapperwhite is offline  
Quote Quick Reply Share with Facebook
post #3 of 15 Old 12-24-2008
Junior Member
 
Join Date: Sep 2006
Location: Oklahoma for now
Posts: 24
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
I second Fastenal. I use them all the time and have not found anything they can't provide. You can buy a package of 100 SS screws for about what you would pay for a package or two of 5 at West Marine.
rawsonnut is offline  
Quote Quick Reply Share with Facebook
post #4 of 15 Old 12-24-2008 Thread Starter
Senior Member
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,321
Thanks: 4
Thanked 128 Times in 125 Posts
Rep Power: 11
   
Sumb|tch!

You guys are right, BOTH of them carry them, although each has a new and different name for them. It's gonna wind up costing me $2 per screw (for the ones I need) and another BOX to stockpile....but they've GOT 'em.

Now of course comes the hard part, I'e got to finesse the micrometer into the two stripped out holes and figure out just how much screw I'll need to resecure them. And (stop laughing!) I'll need to convert these damned carpentry measurements into METRIC to compare versus what I have. Like, if a stripped 4mm hole needs a 5mm screw, and I can't order 1/5" screws....what, do I shoot for 7/32" ?? Which is called a "number what?" from the other guy?

Quickly, tie my hands, keep me away from the rivet gun.

Thank you, gents. I've dealt with both of those guys--but didn't think to go look there. And the names they use....these screws have more euphemisms and names than I've ever seen for one damn simple part!

Last edited by hellosailor; 12-24-2008 at 10:19 PM.
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #5 of 15 Old 12-24-2008
Senior Member
 
Join Date: Aug 2006
Location: wherever
Posts: 5,279
Thanks: 8
Thanked 17 Times in 16 Posts
Rep Power: 11
     
What type of stainless are the screws you'll get at McMaster?
400 series stainless is magnetic. You'll want something in the 300 series, prefferedly 316 or at least 304. Lots of 440 and 303 around. ASK FIRST!

My local marine chandlery carries them. Not sure the price...

If you need to look further, try Jamestown Distributors.
xort is offline  
Quote Quick Reply Share with Facebook
post #6 of 15 Old 12-24-2008
Telstar 28
 
sailingdog's Avatar
 
Join Date: Mar 2006
Location: New England
Posts: 43,290
Thanks: 0
Thanked 14 Times in 12 Posts
Rep Power: 14
         
Xort's point about what grade of stainless steel the screws are made of is a good one. 304 or 316 are far better than the martentistic 400 series grades, which will corrode in a salt water environ rather quickly. 300 series, austentitic stainless steels are non-magnetic.

That said, McMaster-Carr or Fastenal should be able to tell you what grade stainless they're using.

Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
sailingdog is offline  
Quote Quick Reply Share with Facebook
post #7 of 15 Old 12-25-2008
Not So Senior Member
 
Sapperwhite's Avatar
 
Join Date: Oct 2006
Location: Maryland
Posts: 2,504
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 11
     
The application wasn't specified, could be boat related or the side of a barn related? Does it need to be 316?

Dictated, but not read.
Sapperwhite is offline  
Quote Quick Reply Share with Facebook
post #8 of 15 Old 12-25-2008
Senior Member
 
timebandit's Avatar
 
Join Date: Sep 2002
Posts: 928
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 13
 
Screw/ Max diameter
#3/ .0990
#4/ .1120
#5/ .1250
#6 /.1380
#8/ .1640
#10/ .1900
#12/ .2160
1/4/ .2500
Continues in inch size

You can try sizing the hole with drill bits and then mic the bit.

Quote:
Originally Posted by hellosailor View Post
Sumb|tch!

You guys are right, BOTH of them carry them, although each has a new and different name for them. It's gonna wind up costing me $2 per screw (for the ones I need) and another BOX to stockpile....but they've GOT 'em.

Now of course comes the hard part, I'e got to finesse the micrometer into the two stripped out holes and figure out just how much screw I'll need to resecure them. And (stop laughing!) I'll need to convert these damned carpentry measurements into METRIC to compare versus what I have. Like, if a stripped 4mm hole needs a 5mm screw, and I can't order 1/5" screws....what, do I shoot for 7/32" ?? Which is called a "number what?" from the other guy?

Quickly, tie my hands, keep me away from the rivet gun.

Thank you, gents. I've dealt with both of those guys--but didn't think to go look there. And the names they use....these screws have more euphemisms and names than I've ever seen for one damn simple part!

Rick
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Mac 25
Copernicus
Southern California
I am not a prejudice racist sexist bigot. I just hate stupid people.
timebandit is offline  
Quote Quick Reply Share with Facebook
post #9 of 15 Old 12-25-2008 Thread Starter
Senior Member
 
hellosailor's Avatar
 
Join Date: Apr 2006
Posts: 11,321
Thanks: 4
Thanked 128 Times in 125 Posts
Rep Power: 11
   
Kudos to Sapperwhite, the application is not marine and in fact, magnetic screws would be a great plus. Turns out that I'll probably need a #12 because neither of those guys carries them metric and a #10 may be too thin to do it--I'll have to check very carefully.

Of course, even McM doesn't carry #12, they jump from #10 to 1/4x20. Choice of material? I'll be lucky to get "metal".

I like the way Fastenal quietly generates a list with single screws for a dime, listed line by line mixed in with "qty 35000, $1994.65" two thousand dollars worth of screws. Gotta be careful about that "ADD TO CART" button!
hellosailor is offline  
Quote Quick Reply Share with Facebook
post #10 of 15 Old 12-25-2008
Senior Member
 
bljones's Avatar
 
Join Date: Oct 2008
Location: South Coast Ontario
Posts: 8,468
Thanks: 35
Thanked 89 Times in 80 Posts
Rep Power: 8
   
If you want metric, you want M6 x 6. How many do you need? Metric is easy to find up here. I have a ton of M6 x 10 and M6 x 12 self tapping cheesehead screws in my VW parts stash. If length is not critical, I'd be happy to send you some.
bljones is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Which silicone for portlight glass? GBurton Gear & Maintenance 17 12-20-2007 02:09 AM
Self tapping screws in the mast. paul77 Gear & Maintenance 29 11-23-2007 10:25 PM
Extra-long machine screws brak Gear & Maintenance 7 10-10-2007 08:26 PM
pop rivets or machine screws? groundhog Gear & Maintenance 7 06-01-2007 08:03 AM
Sailors Should Sew Don Casey Gear and Maintenance Articles 0 03-14-2000 07:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome