The 41-7-LF from Calmark Birtcher is Wedge-Lok with 3 segment, non-shafted design, lock & flat washer and rivet mounting Ø1.70 (.067) hole with 3.96 (.156) counterbore x 5.08 (.200) deep and 100° x 3.56 (.140) countersink. This Wedge-Lok has 6.10 mm (0.240") x 4.57 mm (0.180") profile dimensions and 88.90mm (3.5") length. For cold wall applications.