AT 1848 AT 1849 AT3 ATN 20 (BB480004H) DIN 7721-1-25 ATP10/1400 PUR DIN 7721-50- ATP10/2120 DL -PUR LS 42 AT10/27-2 HUB 60 PART NO.7.6 AT 10/2100 PAZ, PROFILE: 2.3.4.005.005 119568;; SM4 . OBSOLETE REPLACEMENT SM-5-D SYNCHRONSCHEIBE AT 20 T10 Q 560mm T10/560 YP0 0 0000 22246 YP0 0 0000 22251 SM5 SM4(obsolete-upgraded to SM5)