Reply
 
Thread Tools Search this Thread
 
Old 25 October 2013, 23:53   #1
ncp
Member
 
ncp's Avatar
 
Country: USA
Town: California
Make: Avon 5.4m Searider
Length: 5m +
Engine: Yamaha 90
Join Date: Aug 2011
Posts: 1,191
M6 x 70mm flat head phillips screw in 316

Need 8 of these with washers w/ nuts.

Thought about trying to substitute 1/4-20 x 2.75" (At the the suggestion of Willard since this is what they use now). The problem with the SAE screw is the that the head is bigger and they don't fit in the countersunk spot. (see pic, note how one doesn't sit flush).

Also, already found them in 18-8 stainless (from what I've read, just below 304 quality) but would like to find 316 since they're holding my elephant trunks on and are in the water.

Thanks
__________________

__________________
ncp is offline   Reply With Quote
Old 25 October 2013, 23:54   #2
ncp
Member
 
ncp's Avatar
 
Country: USA
Town: California
Make: Avon 5.4m Searider
Length: 5m +
Engine: Yamaha 90
Join Date: Aug 2011
Posts: 1,191
Click image for larger version

Name:	ForumRunner_20131025_205425.jpg
Views:	117
Size:	62.4 KB
ID:	86631



Click image for larger version

Name:	ForumRunner_20131025_205435.jpg
Views:	122
Size:	35.0 KB
ID:	86632
__________________

__________________
ncp is offline   Reply With Quote
Old 26 October 2013, 01:30   #3
Member
 
Country: USA
Town: CA
Make: Zodiac RIB-P
Length: 7m +
Engine: Suzuki 250
Join Date: Aug 2010
Posts: 1,122
Hit the flange with a countersink to fit the new size screw?
__________________
Bigtalljv is offline   Reply With Quote
Old 26 October 2013, 03:31   #4
RIBnet supporter
 
nugent's Avatar
 
Country: UK - England
Town: Bromsgrove
Boat name: Kick-Ass !
Make: PAC/Artic 22
Length: 6m +
Engine: 250hp Yamaha
Join Date: Nov 2003
Posts: 3,387
Quote:
Originally Posted by Bigtalljv View Post
Hit the flange with a countersink to fit the new size screw?
Wot e said
__________________

MY BIGGEST WORRY IS THAT MY WIFE(WHEN I"M DEAD)WILL SELL MY TOY'S FOR WHAT I SAID I PAID FOR THEM.
nugent is offline   Reply With Quote
Old 26 October 2013, 09:35   #5
ncp
Member
 
ncp's Avatar
 
Country: USA
Town: California
Make: Avon 5.4m Searider
Length: 5m +
Engine: Yamaha 90
Join Date: Aug 2011
Posts: 1,191
Quote:
Originally Posted by Bigtalljv View Post
Hit the flange with a countersink to fit the new size screw?
When I got my stainless swim step made they dunked it in some sort of solution so that the welds wouldn't rust and keep it pretty. I don't know if that was done to that stainless ring (looks pretty good for 1994). But, which is the lesser of the two evils New countersink to expose virgin stainless of use lesser grade stainless screws?

The only reason I'm looking is because two of eight originals have mangled heads so I just assumed for a couple dollars that I could just replace the whole lot. It's never that simple...
(I don't have the bits to countersink either - I'd need to buy/borrow)
__________________
ncp is offline   Reply With Quote
Old 26 October 2013, 16:45   #6
Member
 
Country: USA
Town: CA
Make: Zodiac RIB-P
Length: 7m +
Engine: Suzuki 250
Join Date: Aug 2010
Posts: 1,122
Countersink are cheap, just a couple bucks. Not sure about the rust. Isn't stainless like AL in that once the top oxidizes it's protected?
__________________
Bigtalljv is offline   Reply With Quote
Old 28 October 2013, 10:18   #7
Member
 
Country: USA
Town: Oakland CA
Length: 3m +
Join Date: Feb 2005
Posts: 6,653
The nickel reacts pretty quick to oxygen; a matter of seconds (if that) if I recall right.

Exposing fresh SS to air isn't a problem. If it was, every metal to metal contact would leave a trail of rust.

jky
__________________

__________________
jyasaki is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 17:15.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.