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NH 273

Best buy the right bolts from the dealer. Flywheel bolts are commonly special, as in special shoulder size,
head size, etc. NOT and area you want to take a chance on!
 
Sure do not want to argue with Steve but I have two NH bailers that have been running on 2 1/2 in long 7/16 grade 2 bolts for years. Might replace one in three years only if something causes a full lock up.
 
I'm talking about engine flywheel to crankshaft bolts. Major disaster if those fail!

If it's a shear bolt, then yes, grade 2 is typical.
 
I always used a grade 2. But I used to share my baler with a neighbor. He got some from the dealer and IIRC they were grade 5. I have had the Gr 2s fail under what seemed to be a normal load without a slug.
 
Buy and use the New Holland shear bolts. Standard bolts are too small too hard or too soft. Will be replacing bushings in flywheel and yoke.
 
(quoted from post at 17:51:07 06/12/15) I'm talking about engine flywheel to crankshaft bolts. Major disaster if those fail!

If it's a shear bolt, then yes, grade 2 is typical.
Click to expand...

Grade 2 is no marks on bolt head?
 
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