TRACTOR PARTS Allis Chalmers Case & David Brown Farmall & International Ferguson Ford & New Holland John Deere Massey Ferguson Massey Harris Minneapolis Moline Oliver & Cockshutt Kubota / Yanmar

TRACTOR MANUALS

Allis Chalmers	Case	Farmall IH	Ford 8N,9N,2N	Ford
Ferguson	John Deere	Massey Ferguson	Minn. Moline	Oliver

Ford 9N, 2N & 8N Discussion Forum

Square holes for carriage bolts

Welcome Guest, Log in or Register

Author

Ramrod

07-28-2005 13:14:24

Report to Moderator

I finally located some fine thread grade 8 carriage bolts for my new rear fenders, which have only one round hole for the 1/2" rivet. How do I get the square 3/8" holes I need for the carriage bolts cut in there? I can't find my 3/8" square drill bit!

Ramrod

[Log in to Reply] [No Email]

Stickler

07-28-2005 17:55:37

Report to Moderator

Re: Square holes for carriage bolts in reply to Ramrod, 07-28-2005 13:14:24

And if you were a business that did this type of thing all the time, you'd spring for a square hole punch, I think Greenlee makes them. They're pricey, but slick. We have them and rectangular hole ones at work.

[Log in to Reply] [No Email]

TIMW(PA)

07-28-2005 16:29:10

Report to Moderator

Re: Square holes for carriage bolts in reply to Ramrod, 07-28-2005 13:14:24

RamRod...I always use a tapered square file. Tapered end can get into the round hole and start squaring it off. They come in different sizes. This link and image is for a 1/4" one. HTH Tim

MSC Industrial Supply Square File

[Log in to Reply] [No Email]

Ramrod

07-28-2005 16:53:07

Report to Moderator

Re: Square holes for carriage bolts in reply to Tim PloughNman Daley, 07-28-2005 15:54:26

I found the bolts at Des Moines Bolt. They have a web page. They are not stainless, grade 8 bolts in white, not yellow zinc. You can't do grade 8 in stainless as far as I know. I'm unable to document which bolts were originally in the NAA rear fenders, can't find them in my book. Anybody know for sure?

Ramrod

[Log in to Reply] [No Email]

Dan

07-28-2005 16:14:48

Report to Moderator

Re: Square holes for carriage bolts in reply to Tim PloughNman Daley, 07-28-2005 15:54:26

Tim - he is talking about the bolts that hold the fender skins onto the support brackets, not the LOOOONG carraige bolts that hold the entire fender onto the tractor.

Also - I got some 5/8-18 carraige bolts and nuts a few days ago from a very well stocked hardware store called Elliott's to hold the rear wheel centers to the rims on Rustbucket. They had them all the way up to 6".

Dan

[Log in to Reply] [No Email]

Jeb2N

07-28-2005 16:40:01

Report to Moderator

Re: Square holes for carriage bolts in reply to Dan, 07-28-2005 16:14:48

I think we are all a little confused. To my knowledge, other than the bolt that holds the light to the bracket, there were NO carriage bolts originally called out. The fender bracket-to-axle bolts were regular hex head bolts. The three bolts in the front and rear that attach a light bracket to used regular hex-head bolts, washers, and nuts. The round head fasteners that were used at the bottom and center holes were RIVETS. Most people when doing a fender skin replacement use the hex button head bolts...looks like a carriage bolt but no square shoulder and has an allen wrench socket in the middle of the head to hold it. Just fill in the hole and paint over it. I used carriage bolts and just let them pull themselves through the metal and cut their own holes. Didn't have any problems.

Jeb

[Log in to Reply] [No Email]

Tim PloughNman Daley

07-28-2005 17:42:14

Report to Moderator

Re: Square holes for carriage bolts in reply to Jeb2N, 07-28-2005 16:40:01

Hiya Jeb-
I read the post too fast...you're right. The fender to skins were hex heads and rivets. The fender to axle trumpet bolts were hex heads up until the 1949 8N when they were indeed changed to carriage bolts. Fenders had square holes, but I'm not sure if the trumpets were cast square too. My '48 8N would not accept a carriage bolt no matter how much I tried to force it. I also missed the grade 8 part duh! Stainless??? I need to read more carefully...

Tim

[Log in to Reply] [No Email]

Jeb2N

07-29-2005 03:23:38

Report to Moderator

Re: Square holes for carriage bolts in reply to Tim PloughNman Daley, 07-28-2005 17:42:14

I always wondered what the equivalent grade is on a Stainless Steel bolt. STronger than a grade 2 shear bolt, but is it about the same as a grade 5 or is it weaker? I have wrung off several brand new SS bolts (7/16" shank) using a single open ended wrench and that got me thinkin.

Thanks for the heads up about the fender/axle bolt change in '49. I was not aware of that. Now, i'm trying to think back as to whether or not i took my bench grinder and ground down the corners of the square shoulder on the carriage bolts or not. I'm starting to think I did but there was enough "meat" left to where they almost wedged themselves in place when they bottomed out and I had no trouble keeping them from turning.

Jeb

[Log in to Reply] [No Email]

H Kutzler

07-28-2005 15:12:10

Report to Moderator

Re: Square holes for carriage bolts in reply to Ramrod, 07-28-2005 13:14:24

I would use button head bolts. They dont need a square hole and you can hold them with a allen head wrench in the center of the head

[Log in to Reply] [No Email]

Russ SoCal

07-28-2005 15:37:59

Report to Moderator

Re: Square holes for carriage bolts in reply to H Kutzler, 07-28-2005 15:12:10

Then fill the allen wrench hole with bondo. Could use JBWeld if yer never gonna remove 'em.
Russ

[Log in to Reply] [No Email]

Dan Kelly

07-28-2005 15:05:24

Report to Moderator

Re: Square holes for carriage bolts in reply to Ramrod, 07-28-2005 13:14:24

Ramod,
I'd just use the carrage, the grade 8 should cut its own square hole thru the softer skin.
Dan

[Log in to Reply] [No Email]

Dan

07-28-2005 13:44:03

Report to Moderator

Re: Square holes for carriage bolts in reply to Ramrod, 07-28-2005 13:14:24

Which bolt holes are you talking about - the skin to the supports? If so, you could lay the bolts where they go in the skins and with the supports installed to ensure the bolts are lined up correctly - then wack the head of the bolt good so it makes an impression on the skin metal. Then remove everything and use a cold chisel to square the marks out.

Sounds like a lot of work to me, I would just use cap bolts.

Dan

[Log in to Reply] [No Email]

Ramrod

07-28-2005 14:08:55

Report to Moderator

Re: Square holes for carriage bolts in reply to Dan, 07-28-2005 13:44:03

I was going to use standard grade 8 3/8" hex bolts until I saw RustBucket with its painted head carriage bolts looking soooo gooood.

[Log in to Reply] [No Email]

[Options] [Printer Friendly] [Posting Help] [Return to Forum] [Log in to Reply]

TRACTOR PARTS	TRACTOR MANUALS

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]

Home | Forums

Copyright © 1997-2023 Yesterday's Tractor Co.
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy