This is a A-AH204016 Cap With Grease Zerk PN: AH204016Main Description As Following : A-AH204016 Cap With Grease Zerk P.N: AH204016 Inside Diameter: .646" / .648"Outside Diameter: 1.500"Thread: 1/4-28 RH ThrdTop Width: 1.25" Crossed From: SH304016 SHOUP Found in Section & Models : Headers/Platforms/Feeder House > Corn Head Parts, John Deere HEAD, CORN: 1243 (w/ SN 466450>), John Deere HEAD, CORN: 1293, John Deere HEAD, CORN: 235 (Lower gathering idler), John Deere HEAD, CORN: 243 (w/ SN 466450>), John Deere HEAD, CORN: 244 (w/ SN 466450>), John Deere HEAD, CORN: 335 (Lower gathering idler), John Deere HEAD, CORN: 343 (w/ SN 466450>), John Deere HEAD, CORN: 344 (w/ SN 466450>), John Deere HEAD, CORN: 435 (Lower gathering idler), John Deere HEAD, CORN: 443 (w/ SN 466450>), John Deere HEAD, CORN: 444 (w/ SN 466450>), John Deere HEAD, CORN: 493, John Deere HEAD, CORN: 494, John Deere HEAD, CORN: 543 (w/ SN 466450>), John Deere HEAD, CORN: 546 (w/ SN 466450>), John Deere HEAD, CORN: 594, John Deere HEAD, CORN: 635 (Lower gathering idler), John Deere HEAD, CORN: 642 (w/ SN 466450>), John Deere HEAD, CORN: 643 (w/ SN 466450>), John Deere HEAD, CORN: 644 (w/ SN 466450>) Associated Items : A-AH101219 Also This is An Aftermarket Product And : Inside Diameter: .646" / .648" Outside Diameter: 1.500" Thread: 1/4-28 RH Thrd Top Width: 1.25"