This is a A-T18716 WASHER PN: T18716Main Description As Following : A-T18716 WASHER P.N: T18716 A-T18716 WASHER P.N: T18716 Crossed From: WN-T18716 , , WNT18716 , Found in Section & Models : Hitch & Drawbar Parts > Drawbars and Related Parts, John Deere TRACTOR: 1020, John Deere TRACTOR: 1030, John Deere TRACTOR: 1030 (SN 50000-), John Deere TRACTOR: 1035 (SN 50000-), John Deere TRACTOR: 1040 (European Edition), John Deere TRACTOR: 1120, John Deere TRACTOR: 1130, John Deere TRACTOR: 1140 (European Edition), John Deere TRACTOR: 1520, John Deere TRACTOR: 1530, John Deere TRACTOR: 1550 (European Edition), John Deere TRACTOR: 1630, John Deere TRACTOR: 1630 (SN 50000-), John Deere TRACTOR: 1635 (SN 50000-), John Deere TRACTOR: 1640, John Deere TRACTOR: 1640 (SN -429999 European Edition), John Deere TRACTOR: 1640 (SN 430000-), John Deere TRACTOR: 1641, John Deere TRACTOR: 1641F, John Deere TRACTOR: 1750 (European Edition) Associated Items : New Also A-FRM-JD, A-JD-O-OMR48388, A-JD-O-OMT26335, A-JD-S-SM2071, A-SMJD37, A-FRM-JD, A-JD-O-OML29383, A-JD-O-OMR71859, A-FRM-JD, A-JD-P-PC1121, A-JD-S-TM1012, A-SMJD37, A-FRM-JD, A-SMJD37, A-JD-O-OMR71859, A-FRM-JD, A-JD-P-PC1289, A-JD-S-TM1051, A-FRM-JD, A-JD-O-OMT14690T And : Outside Diameter: 7/16"