Proper bolt type for mast step? - SailNet Community
LinkBack Thread Tools
post #1 of 2 Old 05-21-2013 Thread Starter
Beneteau F310 ~ APOTHIC
cghubbell's Avatar
Join Date: May 2009
Location: Ontario, NY (PYC)
Posts: 162
Thanks: 5
Thanked 0 Times in 0 Posts
Rep Power: 7
Proper bolt type for mast step?

I have a 1977 CS27 with a deck-stepped mast. Somehow over the winter, the bolt which attaches the aluminum mast base casting to the aluminum mast step has vanished, as such, I need to order a new one.

I see a number of varieties of bolts, and I'm wondering if there is any consensus on the best practice for bolt grade in this application.

18-8 Stainless vs. 316 stainless?
Grade 2,5,8?

It seems like this bolt will have very little load on it other than perhaps some shear loading, which I think any bolt will be sufficient to handle in the proper dimensions. I'm guessing 18-8 would be the best bet for its balance of strength and corrosion resistance. Does that sound right?

I think the biggest challenge is going to be finding a partially threaded bolt with the proper unthreaded portion to prevent grinding up the mast base.

Thank you,

Beneteau F310 ~ Apothic
PYC, Lake Ontario
cghubbell is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 2 Old 05-21-2013
Senior Member
krisscross's Avatar
Join Date: Feb 2013
Location: NC
Posts: 2,269
Thanks: 29
Thanked 136 Times in 135 Posts
Rep Power: 3
Re: Proper bolt type for mast step?

I think any stainless bolt will work just fine. That is what I use on my Mirage. I coat it with a little grease once a year and never had problems with it.

Be kind, for everyone you meet is fighting a hard battle.
krisscross is online now  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

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


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

Email Address:


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
mast step hindsight SailNet FAQ 0 05-28-2012 01:34 AM
Cal Mast Step micheck Cal 1 11-07-2010 06:16 AM
Is there a step by step for a stepping of the mast? Skipper Joe Gear & Maintenance 5 07-15-2009 07:45 PM
How often should I step my mast doons60 Gear & Maintenance 7 05-28-2009 12:58 PM
mast step pivot, tabernacle bolt etc. nu2c Gear & Maintenance 6 09-30-2006 07:04 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