|
This is the modern view of the Yesterday's Tractors Forums. Just login with your YT Userid and password to post. If you have trouble logging in, contact us by email to support at ytmag.com, or through the Reader Form, and we will get you going right away.
| View previous topic :: View next topic |
| Author |
Message |
heybusdriver
Long Time User
Joined: 25 Nov 2000
Posts: 817
Location: Surrey B.C. Canada
Report to Moderator
|
 Posted: Tue Feb 19, 2013 6:42 pm Post subject: What drill size |
  |
|
What drill size would you use to dill a hole to tap a 1/4 grease zerk?
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039
|
|
| Back to top |
|
 |
KrisNMo
Regular
Joined: 05 Mar 2009
Posts: 53
Location: Troy, Missouri
Report to Moderator
|
|
| Back to top |
|
|
joe in wilkinson
New User
Joined: 17 Sep 2011
Posts: 8
Report to Moderator
|
| Posted: Tue Feb 19, 2013 7:22 pm Post subject: Re: What drill size |
|
|
#3 drill = .213" dia.
Could also use a 7/32" which is .218" dia.
This is for 1/4-28 threads.
|
|
| Back to top |
|
|
BMACK518N
Regular
Joined: 22 Jul 2008
Posts: 152
Report to Moderator
|
| Posted: Wed Feb 20, 2013 6:35 am Post subject: Re: What drill size |
|
|
1/4-18 NPT?
1/4-28?
1/4 Drive?
All take a different bit size.
|
|
| Back to top |
|
|
heybusdriver
Long Time User
Joined: 25 Nov 2000
Posts: 817
Location: Surrey B.C. Canada
Report to Moderator
|
| Posted: Wed Feb 20, 2013 8:47 am Post subject: Re: What drill size |
|
|
Like I said, grease zerk, you tell me.
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039
|
|
| Back to top |
|
|
heybusdriver
Long Time User
Joined: 25 Nov 2000
Posts: 817
Location: Surrey B.C. Canada
Report to Moderator
|
| Posted: Wed Feb 20, 2013 8:59 am Post subject: Re: What drill size |
|
|
The zerk is about 1/4 long with about 4 threads, i's just a grease zerk , not to major of an issue, is it 1/4 -18 NPT, 1/4-28 or 1/4 drive? Sorry to ask such a technical question,
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039
|
|
| Back to top |
|
|
R Geiger
Tractor Expert
Joined: 19 Apr 2009
Posts: 1771
Location: Banks, Oregon
Report to Moderator
|
| Posted: Wed Feb 20, 2013 9:03 am Post subject: Re: What drill size |
|
|
| heybusdriver wrote: | (quoted from post at 01:59:01 02/21/13) The zerk is about 1/4 long with about 4 threads, i's just a grease zerk , not to major of an issue, is it 1/4 -18 NPT, 1/4-28 or 1/4 drive? Sorry to ask such a technical question,
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039 |
Google is your friend. before you can figure out whcich drill to use you need to figure out what you have. seen picture charts for straight and taper threads by looking at google for zeerk fittings.
|
|
| Back to top |
|
|
JCinKY
Regular
Joined: 01 Aug 2012
Posts: 276
Location: Glendale KY
Report to Moderator
|
| Posted: Wed Feb 20, 2013 9:35 am Post subject: Re: What drill size |
|
|
| heybusdriver wrote: | (quoted from post at 09:59:01 02/20/13) The zerk is about 1/4 long with about 4 threads, i's just a grease zerk , not to major of an issue, is it 1/4 -18 NPT, 1/4-28 or 1/4 drive? Sorry to ask such a technical question,
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039 |
If it is 1/4" and most likely NPT, it is close enough to course thread 1/4 - 20. Get a #6 drill and a 1/4-20 tap and you should be fine. These are very common sizes and are probably easier to find than NPT (maybe cheaper). Its just a grease zerk...
|
|
| Back to top |
|
|
BMACK518N
Regular
Joined: 22 Jul 2008
Posts: 152
Report to Moderator
|
| Posted: Wed Feb 20, 2013 10:05 am Post subject: Re: What drill size |
|
|
Study up, more to grease zerk's than you think. Even metric sizes now.
|
|
| Back to top |
|
|
Caryc
Long Time User
Joined: 03 Mar 2010
Posts: 1166
Location: Southern Cal.
Report to Moderator
|
| Posted: Wed Feb 20, 2013 10:17 am Post subject: Re: What drill size |
|
|
| heybusdriver wrote: | (quoted from post at 19:42:43 02/19/13) What drill size would you use to dill a hole to tap a 1/4 grease zerk?
Stan
9N 222933
2N with 8N motor 8N345567
8N 146710
8N 179555
8N 197904
8N 199000
8N 254079
8N 362039 |
A screw pitch gauge is your friend. Seriously, they are not that expensive and do come in handy sometimes. Every tool box should have one.
Except for some of them ol' geezers who can look at any thread and tell you what it is. 
Last edited by Caryc on Wed Feb 20, 2013 10:18 am; edited 1 time in total |
|
| Back to top |
|
|
TheOldHokie
Tractor Guru
Joined: 08 Apr 2005
Posts: 5869
Location: Myersville, MD
Report to Moderator
|
| Posted: Wed Feb 20, 2013 10:29 am Post subject: Re: What drill size |
|
|
| BMACK518N wrote: | | (quoted from post at 14:05:48 02/20/13) Study up, more to grease zerk's than you think. Even metric sizes now. |
Sometimes the advice you get here isn't even worth what you pay for it which is zero. JC also needs to do some studying on thread/pipe sizes. The pitch diameter of a 1/4" NPT male pipe thread is .447 at the first thread (small end) of the taper. Good luck screwing that into a 1/4 tapped hole of any pitch 
TOH
Last edited by TheOldHokie on Wed Feb 20, 2013 10:30 am; edited 1 time in total |
|
| Back to top |
|
|
JCinKY
Regular
Joined: 01 Aug 2012
Posts: 276
Location: Glendale KY
Report to Moderator
|
| Posted: Wed Feb 20, 2013 11:04 am Post subject: Re: What drill size |
|
|
I apologize for not being clear. I assumed you simply measured the diameter of the zerk and called it 1/4". I do understand the difference between NPT and UNF/UNC thread counts, pitches, and nominal diameters.
You wanted a drill size. If the thing is 1/4" OD measured, a #6 drill is .204, 1/4-20 tap is, well, .250. Close enough for a grease zerk in my book, but thats just me. Heck, stick it in a nut and see which one works and go from there.
Had some 6mm zerks on a mower I am restoring now. Bought a bag of 20, got a #6, 1/4" tap and the work like the should. Why spend the time and money to get a 6mm tap.
Again, this is all based on the assumption that you have measured the OD of the fitting at 1/4". I apologize for any oversights or poor information given. You know what they say about assumptions, the make an A## out of you and me...in this case only me.
Sorry
|
|
| Back to top |
|
|
JCinKY
Regular
Joined: 01 Aug 2012
Posts: 276
Location: Glendale KY
Report to Moderator
|
|
| Back to top |
|
|
|
|
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
|
Powered by phpBB © 2001, 2005 phpBB Group
|
|
|
Discount Prices for Parts! You can help support this extensive website by purchasing your tractor parts, manuals and merchandise from our [ Antique Tractor Store ] or call our friendly sales staff toll free (800) 853-2651. [ More Info ]
|
YT Home
| Tractor Manuals
| Tractor Parts
| Forum Home
Copyright © 1997-2013 Yesterday's Tractor Co. - A Washington State Corporation
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
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
