Stainless Steel Bolts - SailNet Community
Reply
 
LinkBack Thread Tools
post #1 of 11 Old 05-04-2012 Thread Starter
Senior Member
 
casey1999's Avatar
 
Join Date: Oct 2010
Location: HI
Posts: 3,275
Thanks: 18
Thanked 45 Times in 44 Posts
Rep Power: 5
 
Stainless Steel Bolts

Many stainless steel bolts I see (316 or 308) have the letters "THE" on the hex head. Is this the manufacturer's name or does it have another meaning. I have done internet search and find nothing about "THE".

Also, do 316 stainless bolts have different grades like the carbon steel bolts, or is there just one grade?

Regards
casey1999 is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 11 Old 05-04-2012
Senior Member
 
tommays's Avatar
 
Join Date: Sep 2008
Posts: 4,296
Thanks: 1
Thanked 30 Times in 30 Posts
Rep Power: 7
 
Re: Stainless Steel Bolts

I believe THE is a brand of some type as even here on the east cost of the USA MOST of the stuff I buy has this on the head

316 is 316 and it might make it to a grade 3 BUT as its 316 nothing can really be added to change its strength

SS is kind of funny stuff as while it tough as hell to work with it's not that strong

most machines that bend/shear or form it lose about 1/2 capacity

1970 Cal 29 Sea Fever

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

1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
tommays is offline  
Quote Quick Reply Share with Facebook
post #3 of 11 Old 05-04-2012 Thread Starter
Senior Member
 
casey1999's Avatar
 
Join Date: Oct 2010
Location: HI
Posts: 3,275
Thanks: 18
Thanked 45 Times in 44 Posts
Rep Power: 5
 
Re: Stainless Steel Bolts

Quote:
Originally Posted by tommays View Post
I believe THE is a brand of some type as even here on the east cost of the USA MOST of the stuff I buy has this on the head

316 is 316 and it might make it to a grade 3 BUT as its 316 nothing can really be added to change its strength

SS is kind of funny stuff as while it tough as hell to work with it's not that strong

most machines that bend/shear or form it lose about 1/2 capacity
That what I am thinking on the THE, the name brand. But every search I do I cannot find a manufacturer called THE. Next time I am in a store that sells the THE, I will ask them where the bolt came from to try to figure it out. Post if I find anything.
Regards
casey1999 is offline  
Quote Quick Reply Share with Facebook
post #4 of 11 Old 05-04-2012
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,518
Thanks: 104
Thanked 309 Times in 299 Posts
Rep Power: 10
     
Re: Stainless Steel Bolts

Here's and article on SS bolts and grades.. looks like 316 is sub-Grade 5, I know in industry SS doesn't do well in high vibration situations....

Article: Stainless steel fasteners

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Faster is offline  
Quote Quick Reply Share with Facebook
post #5 of 11 Old 05-04-2012
Large Member
 
Join Date: May 2007
Location: Texas
Posts: 1,000
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 9
 
Re: Stainless Steel Bolts

316 is also weaker than 18-8. Technically 316 is more resistant to corrosion (when used in applications like the chemical industry) but 18-8 seems to be preferred for marine use. (or so I have been told by experts)
mdbee is offline  
Quote Quick Reply Share with Facebook
post #6 of 11 Old 05-06-2012
Senior Member
 
sevseasail's Avatar
 
Join Date: Jan 2007
Location: Atlanta, Ga
Posts: 179
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Re: Stainless Steel Bolts

Quote:
Originally Posted by mdbee View Post
316 is also weaker than 18-8. Technically 316 is more resistant to corrosion (when used in applications like the chemical industry) but 18-8 seems to be preferred for marine use. (or so I have been told by experts)
I thought 316 was the preferred for the marine use.....


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

S/V Chata
1980 Catalina 22

"Common sense is the least common of the senses"

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sevseasail is offline  
Quote Quick Reply Share with Facebook
post #7 of 11 Old 05-06-2012
Senior Moment Member
 
SloopJonB's Avatar
 
Join Date: Jun 2011
Location: West Vancouver B.C.
Posts: 11,363
Thanks: 59
Thanked 67 Times in 64 Posts
Rep Power: 5
 
Re: Stainless Steel Bolts

Quote:
Originally Posted by sevseasail View Post
I thought 316 was the preferred for the marine use.....
You were right. 316 is a bit weaker than 304 but is more corrosion resistant. This is one of those cases where you have to be careful about info gleaned from the web. I have seen actual tables on the web that showed 316 was stronger but it isn't.

As a VERY rough rule of thumb, constituents in alloys that improve corrosion resistance (chrome, nickle) either don't increase it's strength or actually weaken it. Constituents that strengthen it (carbon) reduce its corrosion resistance.

I, myself, personally intend to continue being outspoken and opinionated, intolerant of all fanatics, fools and ignoramuses, deeply suspicious of all those who have "found the answer" and on my bad days, downright rude.
SloopJonB is offline  
Quote Quick Reply Share with Facebook
post #8 of 11 Old 05-06-2012
Senior Member
 
sevseasail's Avatar
 
Join Date: Jan 2007
Location: Atlanta, Ga
Posts: 179
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
 
Re: Stainless Steel Bolts

Quote:
Originally Posted by SloopJonB View Post
You were right. 316 is a bit weaker than 304 but is more corrosion resistant. This is one of those cases where you have to be careful about info gleaned from the web. I have seen actual tables on the web that showed 316 was stronger but it isn't.

As a VERY rough rule of thumb, constituents in alloys that improve corrosion resistance (chrome, nickle) either don't increase it's strength or actually weaken it. Constituents that strengthen it (carbon) reduce its corrosion resistance.
Thank you for that !!


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

S/V Chata
1980 Catalina 22

"Common sense is the least common of the senses"

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sevseasail is offline  
Quote Quick Reply Share with Facebook
post #9 of 11 Old 05-07-2012 Thread Starter
Senior Member
 
casey1999's Avatar
 
Join Date: Oct 2010
Location: HI
Posts: 3,275
Thanks: 18
Thanked 45 Times in 44 Posts
Rep Power: 5
 
Re: Stainless Steel Bolts

Quote:
Originally Posted by sevseasail View Post
I thought 316 was the preferred for the marine use.....
My understanding is 316 is recommended for highly corrosive areas such as the tropics and Floriday. Hot areas that get salt spray and sailing in salt water environments is highly corrosive and 316 recommended. This also is supported by rigging wire suppliers. They can supply 304 or 316 but recommend 316 for tropics. I think 316 is about 10% weaker as compred to 304. Not a significant amount. And if you can prevent corrosion, 10% recuction in strength is well work it.

Marine Wire Rope & Cable, Yacht Rigging, Life Line - Loos & Co., Inc.
casey1999 is offline  
Quote Quick Reply Share with Facebook
post #10 of 11 Old 05-07-2012 Thread Starter
Senior Member
 
casey1999's Avatar
 
Join Date: Oct 2010
Location: HI
Posts: 3,275
Thanks: 18
Thanked 45 Times in 44 Posts
Rep Power: 5
 
Re: Stainless Steel Bolts

Quote:
Originally Posted by casey1999 View Post
That what I am thinking on the THE, the name brand. But every search I do I cannot find a manufacturer called THE. Next time I am in a store that sells the THE, I will ask them where the bolt came from to try to figure it out. Post if I find anything.
Regards
Ok so I talk to some of the big name bolt suppliers. They tell me the letters "THE" are the manufactur's stamp, but the suppliers cannot tell me the company that makes the bolt, even though they sell the brand. Apparenly the manufacutere is located in either sout Korea or Tawain.

The bolt business seems like kind of a funny thing. You buy a bolt but not really sure who made it. Seems like the supply could be filled with cheap knock off imitations.

A little scary when you are sailing in 30 knots wondering if that single bolt holding your main shroud mast tangs is high quality or some cheap knock off. A previous post gave me the name B&S bolt in VA that sells mil spec bolts- I plan to get those.
http://bsbolts.com/

Last edited by casey1999; 05-07-2012 at 03:18 PM.
casey1999 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
316 Stainless Bolts casey1999 Gear & Maintenance 16 02-09-2012 10:53 PM
stainless steel cleaning noelani Gear & Maintenance 7 11-18-2011 05:33 PM
Stainless Steel Bottom cabron99 Gear & Maintenance 8 05-19-2010 04:37 PM
Stainless Steel... merttan Gear & Maintenance 14 04-12-2008 07:59 PM
Combination stainless steel chain/ galvanized steel anchor Grigrigrigoris Gear & Maintenance 11 07-03-2005 03:46 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