Hex Nuts
Hex Nuts
(OP)
On a current project I'm working on, the lead is specifying jam nuts with anchor rods/bolts that connect multiple baseplates to their foundations on the latest drawings. At times he calls out two jam nuts to be used for conencting to the baseplates. I believe AISC code specifies that Heavy Hex Nuts (ASTM A563, Gr A) should be furnished with all anchor rods/bolts, if possible. Standard hex nuts are also acceptable, but not preferred. My question - how acceptable are jam nuts in this case? Any experience with this issue? I understand jam nuts have a thinner profile, but I cannot see any reason that would be required in this case.
Thanks in advance
Thanks in advance






RE: Hex Nuts
RE: Hex Nuts
Jam nuts are supplementary devices used to keep the primary nut from backing off. For static anchor bolts, they are not necessary.
RE: Hex Nuts
Michael.
Timing has a lot to do with the outcome of a rain dance.
RE: Hex Nuts
I would go back to the lead and make sure he is actually referring to a jam nut (if you have not already) and not the hex nuts you expect.
RE: Hex Nuts
RE: Hex Nuts
RE: Hex Nuts
On large anchorages if I wanted to use a "jam nut" I often just used two heavy hex nuts.