Posted by Janicholson on April 22, 2012 at 07:46:02 from (67.72.98.45):
In Reply to: Re: fine thread bolts posted by John G. Hasler on April 22, 2012 at 06:48:52:
First of all I agree with your assessment of split lock washers. A study was done by a group of engineers with Gary Nut and Bolt (no longer that firm, sold several times) that placed the split lock washer as a prime culprit in thousands of fastener failures. It neither digs into the base metal not nut well enough to resist loosening, nor does it work sat all with a flat washer under it. and beyond cracking it two and falling out, it provides point loading to surfaces it contacts at its pawl shaped split. Throw them in the weeds!!! Star washers are little better. Locktite, Nyloc, Deformed thread nuts, Castile nuts and cotter pins, even jamb nuts are better.
I think we agree on much. I also think the stress on a rigid component with a non stretchable fastener will act as you described. Many assemblies do not comply with ideal. Metal bends and compresses becoming a spring under the head of a bolt that itself has become a spring. Which bolt would you trust more to hold your bungy jumping anchor? The first is bolted through a 6"X4" heavy walled tube in the 6" direction and through a forged steel bracket that pulled straight (axially) on it, tightened (stretched)to 75% of yield. or one that was identical and tightened to 5% of yield. Springiness changes the reality. Jim
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 ]
Today's Featured Article - Allis Chalmers ED40 - by Anthony West. Allis Chalmers as a tractor manufacturer in its own riht is but a memory. However the number of AC tractors still in existence today as either restored or unrestored examples is a testament to the quality of their products. This in itself is always apparent here in the U.K when attempting a purchase, as no matter what the model or condition the price will always be strong.
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
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.
