Adding threads to an existing bolts grip length
Adding threads to an existing bolts grip length
(OP)
Will cutting more threads to an existing grip length of an AN6-54 bolt comprimise it's strength?
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Adding threads to an existing bolts grip length
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RE: Adding threads to an existing bolts grip length
If the bolt is used in tension and the newly cut treads reduce the minimum area of the bolt (minor thread diameter) then the bolt strength will be compromised.
I would also worry about the finish on the bolt. The best bet in my opinion is to order a bolt with the proper grip. Another alternative would be to install a thicker or additional washer (if you are trying to adjust the bolt due to stackup thickness).
Good Luck!
RE: Adding threads to an existing bolts grip length
RE: Adding threads to an existing bolts grip length
My advice is never use a UNF die to cut threads in UNJF hardware.
RE: Adding threads to an existing bolts grip length
The key words are use the correct size grip length. Nothing says you can cut threads to make up for excessive grip. I would think this would become a special purpose bolt and would be marked as such. That would be pretty rare.
We use NAS1108-60D bolts where the heads have been trimmed for the 707 spoiler mounts and special cad plating was required after bolt modification and new part numbers assigned to the hardware. This would be an example of a standard bolt being modified for a certain application. Why cut threads when you could get a correctly gripped bolt right off the shelf?
RE: Adding threads to an existing bolts grip length
RE: Adding threads to an existing bolts grip length
Saving $25/bolt is the easy cheap way out and will likely cost much more in the long run.
RE: Adding threads to an existing bolts grip length
RE: Adding threads to an existing bolts grip length