Hi,
Here are dimensions for a #8 JIC-37° tube fitting SAE J514.
The other post you received was for J513-45° nose fittings.
hole dia. = .391 ±.004
face dia. = .426 ±.010
nose dia. = .659 +.002/-.010
theads are = 3/4-16 unf
nose length = .253 +.016/-.000
turn length = .657 ±.015
thread relief =...