BTH-1 Bolted Connection
BTH-1 Bolted Connection
(OP)
BTH-1 states that there must be two bolts per bolted connection (3-3.2 Bolted Connections). However, crosby sells swivel hoist rings and other lift tools that are only one bolt for the connection. Can anyone explain the difference here?
Thanks.
Thanks.





RE: BTH-1 Bolted Connection
In this case, I don't think the Crosby items fall under BTH, though.
The two-bolt requirement in BTH is just a carryover from standard structural steel requirements (AISC) if I remember correctly.
You've got fabricated structural steel vs forged parts. Crosby may use a higher proof load than the test requirement of BTH, also.