Yesterday's Tractor Co. Parts for Farm Tractors - Compare our Prices!
Click Here or call 800-853-2651 
   Allis Chalmers Case Farmall IH Ford 9N,2N,8N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   Traditional YT Forum ViewClassic View   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Machining Grade 8 Bolt


 
Post new topic    
View previous topic :: View next topic  
Author Message
60 acre hillside
Long Time User


Joined: 27 May 2010
Posts: 1023


Report to Moderator

PostPosted: Wed Jan 02, 2013 5:23 pm    Post subject: Machining Grade 8 Bolt Reply to specific post Reply with quote

I needed some pointed set screws. The store did not have them. I have a 6" Jet lathe and am considering making them from grade 8 cap screws. I have limited experience with carbide tools but get along pretty well shapening HS tool bits. Is grade 8 too hard to turn?
 
Back to top
View user's profile
Dal in MO
New User


Joined: 02 Nov 2007
Posts: 12
Location: NE MO

Report to Moderator

PostPosted: Wed Jan 02, 2013 5:39 pm    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

Grade 8 bolts are fairly soft, about 20 - 25 RC hardness and can be turned very eazly with HSS tool bits, grind your tool bit with about a 7 degree relief angle and a 3 - 5 degree positive rake angle on the top of tool,and run about 300 - 500 RPM, with a small cut on your Jet lathe.
 
Back to top
View user's profile
Ultradog MN
Tractor Guru


Joined: 22 Apr 2001
Posts: 15411
Location: Twin Cities

Report to Moderator

PostPosted: Wed Jan 02, 2013 6:03 pm    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

I agree.
They will cut easily with HSS.
 
Back to top
View user's profile
Eric in IL
Long Time User


Joined: 02 Dec 2005
Posts: 1041


Report to Moderator

PostPosted: Wed Jan 02, 2013 6:11 pm    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

If you are ever in doubt about being able to cut something with HSS, try filing it first. If you can cut it with a file, you can cut it with HSS.
 
Back to top
View user's profile
Bernie/MA
Guest






Report to Moderator

PostPosted: Wed Jan 02, 2013 6:20 pm    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

I have a hand-held bandsaw. A friend was using it to cut bolts, brought it to me because it stopped cutting. I don't know how many he cut but I looked at the heads and they were grade 8s. There were no teeth left on the good bi-metal blade.
 
Back to top
BOBM25
Long Time User


Joined: 19 Apr 2006
Posts: 581


Report to Moderator

PostPosted: Wed Jan 02, 2013 6:58 pm    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

HSS will cut alot more stuff than most people give it credit. You just have to take it slow. Most people get in a hurry and that is what smokes their tooling
 
Back to top
View user's profile
60 acre hillside
Long Time User


Joined: 27 May 2010
Posts: 1023


Report to Moderator

PostPosted: Thu Jan 03, 2013 1:35 am    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

Thanks to all of you. I plan to make them this morning
 
Back to top
View user's profile
cannonball
Long Time User


Joined: 05 Mar 2009
Posts: 624


Report to Moderator

PostPosted: Thu Jan 03, 2013 5:44 am    Post subject: Re: Machining Grade 8 Bolt Reply to specific post Reply with quote

put them in a drill and bench grind them to what point you want..
 
Back to top
View user's profile
Display posts from previous:   
Post new topic    Yesterday's Tractors Forum Index -> Tool Talk All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
TRACTOR   PARTS TRACTOR   MANUALS
Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F).  Expedited shipping available, just call!  Most prices for parts and manuals are below our competitors.  Compare our super low shipping rates!  We have the parts you need to repair your tractor.  We are a Company you can trust and have generous return policies!   Shop Online Today or call our friendly sales staff toll free (800) 853-2651.

YT Home  |  Forums Home

Copyright © 1997-2014 Yesterday's Tractor Co.

Powered by phpBB © 2001, 2005 phpBB Group

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