Taylor Marine Centers - Milford, DE & Ocean City, MDTaylor Marine Centers - Milford, DE & Ocean City, MD

Matching Screws for Rub-Rail/Hull

General questions and answers about Grady Whites

Moderators: Seafarer228G, Potterbuilt

Matching Screws for Rub-Rail/Hull

Postby Jonah » Jan Mon 22, 2018 7:06 pm

Hi all,

Does anyone happen to know the specs on the screws used to hold the rub-rail into place on a '95 Sailfish 272?

As mentioned in another thread, I'm currently in the process of repairing a leak in my cabin, which turns out to be the result of some loose and bent screws in the rub-rail. In the process of removing the rail, I found a number of bent or nearly-stripped screws, and wanted to replace them. I live nowhere near a West Marine (Nassau, Bahamas) and so took one of the screws to a local hardware store. I was unable to find an exact match, so I wonder if I'll need to visit a marine parts shop?

In terms of size, head-shape, and length, the screws seem to be about a #8 US Sheet Metal Screw. (There was limited metric selection to compare, but I figure GW would use US screws, right?). However, when it comes to the threads, the threading is something between a #8 and #10 (unfortunately there does not seem to be a #9!). Friendly guy in the shop told me that if the screws are going into wood or fiberglass, I shouldn't worry too much about the threading, since it will just carve new threads. After all, it doesn't have to screw into a bolt with exact thread match. Any opinions on that?
Attachments
IMG_1331.JPG
IMG_1331.JPG (75.33 KiB) Viewed 248 times
'96 208 with '06 E-Tec 175 (2015—2017)
'95 272 with '12 Yamaha 225s (2017—)
Jonah
 
Posts: 164
Images: 0
Joined: Oct Wed 28, 2015 10:28 pm
Location: Bahamas

Re: Matching Screws for Rub-Rail/Hull

Postby SkunkBoat » Jan Mon 22, 2018 8:12 pm

looks like a stainless steel #8 x 1" countersunk phillips head. I wouldn't worry about the thread either. Its not a machine screw.

If thats what came out, put the same back in. If there are some that don't bite, use a #10 in that hole.

Sometimes putting the rubrail back on, somehow all the holes don't exactly line up anymore. You may have to add some new screws and/or drill new pilot holes.
- SkunkBoat
2000 265 Express, Twin 225 Yamaha Ox66
1984 V20 Steplift, Suzuki DF140 (sold)
Image
SkunkBoat
 
Posts: 87
Joined: Oct Thu 12, 2017 12:23 pm
Location: Manasquan Inlet NJ

Re: Matching Screws for Rub-Rail/Hull

Postby Jonah » Jan Mon 22, 2018 11:47 pm

Thanks Skunkboat,

My main concern was matching the thread, but if that's really no concern, then I'll buy a bunch of #8s and a few #10s for the stripped holes.

I still find it strange that the thread doesn't quite match a #8 or #10. Is there such a thing as a #9?
'96 208 with '06 E-Tec 175 (2015—2017)
'95 272 with '12 Yamaha 225s (2017—)
Jonah
 
Posts: 164
Images: 0
Joined: Oct Wed 28, 2015 10:28 pm
Location: Bahamas

Re: Matching Screws for Rub-Rail/Hull

Postby Fishtales » Jan Tue 23, 2018 1:58 am

Take one to a marine hardware store and have them match it up.
06 300 F250s.
"Once you own a boat, everything else in life is reasonable".
Fishtales
 
Posts: 1906
Images: 3
Joined: Feb Tue 01, 2005 1:30 am

Re: Matching Screws for Rub-Rail/Hull

Postby SkunkBoat » Jan Tue 23, 2018 5:22 am

Jonah wrote:Thanks Skunkboat,

My main concern was matching the thread, but if that's really no concern, then I'll buy a bunch of #8s and a few #10s for the stripped holes.

I still find it strange that the thread doesn't quite match a #8 or #10. Is there such a thing as a #9?


No #9 but sheet metal screws are available with coarse or fine thread. I don't think I've ever seen fine thread Stainless sheet metal screws used in this fashion or sold at marine stores.
Also there are metric versions that would have a different thread which you might be seeing in the Bahamas.

I'm kind of surprised they were flat countersunk and not oval or pan head.
- SkunkBoat
2000 265 Express, Twin 225 Yamaha Ox66
1984 V20 Steplift, Suzuki DF140 (sold)
Image
SkunkBoat
 
Posts: 87
Joined: Oct Thu 12, 2017 12:23 pm
Location: Manasquan Inlet NJ

Re: Matching Screws for Rub-Rail/Hull

Postby Jonah » Jan Tue 23, 2018 11:17 am

Thanks again everyone.

Fishtales, I'll probably take it in. I just live about 35 minutes from the nearest marine shop. Even then, we're still talking about a marine shop in the Bahamas, and so I have my doubts as to whether it's worth the drive. :|

Skunkboat, thanks again. It's actually an oval-head. The angle of the photo didn't quite capture the curved top.

Onward ...
'96 208 with '06 E-Tec 175 (2015—2017)
'95 272 with '12 Yamaha 225s (2017—)
Jonah
 
Posts: 164
Images: 0
Joined: Oct Wed 28, 2015 10:28 pm
Location: Bahamas

Re: Matching Screws for Rub-Rail/Hull

Postby Jonah » Jan Tue 23, 2018 7:43 pm

Update: I wrote to Grady, and they guessed (from memory, not the pic) that the screws were either #8s or #10s. For some reason the threads aren't matching perfectly, but oh well.
'96 208 with '06 E-Tec 175 (2015—2017)
'95 272 with '12 Yamaha 225s (2017—)
Jonah
 
Posts: 164
Images: 0
Joined: Oct Wed 28, 2015 10:28 pm
Location: Bahamas


Return to General Discussion

Who is online

Users browsing this forum: No registered users and 6 guests

Need a boat cover or bimini top? Contact Boat Covers Direct.