Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
 
Marketplace
Classified Ads
Photo Ads
Tractor Parts
Salvage

Community
Discussion Forums
Project Journals
Your Stories
Events Calendar
Hauling Schedule

Galleries
Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Articles
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs
Glossary

Miscellaneous
Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

  
Torque Values

SAE 
Grade
Markings
Tensile 
PSI
Material
 5/16   3/8   7/16   1/2   9/16   5/8   3/4   7/8 
Brass
Brass Bolt
60,000
Copper 63% 
Zinc 37%
17
27
37
49
78
104
160
Stainless
Stainless Steel Bolt
72,000
AISI  303
10
18
28
40
54
80
117
180
2
Grade 2 Bolt
74,000
Low 
Carbon
12
20
32
47
69
96
155
206
3
Grade 3 Bolt 100,000
Medium 
Carbon
17
30
47
69
103
145
234
372
5
Grade 5 Bolt 120,000
Medium 
Carbon Heat 
Treated
19
33
54
78
114
154
257
382
6
Grade 6 Bolt 133,000
Medium 
Carbon 
Tempered
24
43
69
106
150
209
350
550
7
Grade 7 Bolt 133,000
Medium 
Carbon 
Alloy
25
44
71
110
154
215
360
570
8
Grade 8 Bolt 150,000
Medium 
Carbon 
Alloy
29
47
78
119
169
230
380
600
10
Grade 10 Bolt 160,000
High 
Carbon 
Case Hardened
33
54
84
125
180
250
400
640

Safety Notes
These values are given in lb-ft and apply to clean smooth lubricated threads on NEW fasteners. The nut and washer must have equal or greater rating then the bolt.

  • Consult your manual for material type
  • The values are for the fastener not the assembly. 
  • Some assembles can not with stand the maximum clamping force.
  • The values for fine treads are slightly higher.

    Compiled By Chris Klossner



    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


    Today's Featured Article - Identifying Tractor Noises - by Curtis Von Fange. Listening To Your Tractor : Part 3 - In this series we are continuing to learn the fine art of listening to our tractor in hopes of keeping it running longer. One particularly important facet is to hear and identify the particular noises that our ... [Read Article]

    Latest Ad: 1997 cub cadet 7275 compact utility tractor 4wd hydro trans cracked block 3500 [More Ads]

    Copyright © 1997-2024 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