C.4 SNUG

The SNUG ValueTag is the reported point where screw head touches the surface and all parts have mated.

There is no common agreed definition of snug today in the industry. Until one is decided, this specification will use the SNUG ValueTag to denote the intersection of the linear approximation of the rundown and the tightening ramp. Most often the reported SNUG value is a rough approximation of this since the disturbance in the signal combined with the nature of the bended part of the curve makes it difficult to calculate exactly.