PART NO. THREAD TUBE O.D. DIMENSIONS E F G D1,D2,D3 A B C S1 S2,S3,S4 AQ-14 M14X1.5 M14X1.5 M14X1.5 8 30.2 30.5 30.2 14 17 AQ-16 M16X1.5 M16X1.5 M16X1.5 10 32 32 32 16 19 AQ-18 M18X1.5 M18X1.5 M18X1.5 12 34 34 34 19 22 AQ-22 M22X1.5 M22X1.5 M22X1.5 14 37.5 37.5 37.5 22 27 AQ-27 M27X1.5 M27X1.5 M27X1.5 18 41.5 41.5 41.5 27 32 AQ-30 M30X1.5 M30X1.5 M30X1.5 20 45.8 45.8 45.8 30 36 AQ-33 M33X2 M33X2 M33X2 22 49.5 49.5 49.5 33 41 Note: In case if you are interested to order the adapter in complete set with sleeve and nut ,it is necessory to inset suffix "RN" in after of part no., for example AQ-18RN.