Pull-over Values

Pull-over values for medium and high rib trapezoidal profiles must be checked against strength loads provided by testing.

Pull-over load depends on the head or washer size. For example, as 12# and 14# screw heads have approximately the same diameter, these screw sizes have the same design load value for pull-over. If the pullover load is likely to be exceeded, the options are to increase the metal thickness or use a load-spreading washer.