Washer, Locking

Listed on the following equipment:
StairMaster - AirFit - 160002
StairMaster - Momentum R - 160008
StairMaster - Momentum U - 160007
Star Trac - 4400 - 9-6430-MINTP0 (PR)
Star Trac - 9-5070 MINTOP
Star Trac - 9-5180-MUNBP0
Star Trac - 9-6130-MINTP0
Star Trac - 9-6230-SINTP0
Star Trac - 9-6330 SINTPO Upright Sport Bike
Star Trac - 9-6330-MINTP0
Star Trac - CrossTrainer 6200 - 9-6230-MINTP0 - Rev. B
Star Trac - CrossTrainer 6200 - 9-6230-MINTP0 - Rev. C
Star Trac - CT6100 Pro Cross Trainer - 9-6130-SINTP0
Star Trac - CT6200 Elite - 9-6230-SINTP0 CT6200
Star Trac - E Series TBT - 9-6040-MINTP0 - Generation 1 (CTEN)
Star Trac - E-RB - 9-8020-MUSAP0 (RBEN)
Star Trac - E-RB - 9-8070-MINTP0 (RBEN)
Star Trac - E-RB - 9-8090-MUNBP0 (RBEN)
Star Trac - E-RB - 9-8110-MUNBP0 (RBEB)
Star Trac - E-TBT6040 - 9-6040-MINTP0 - (CTEN)
Star Trac - E-UB - 9-8040-MINTP0 - 2008 (UBEN)
Star Trac - E-UB - 9-8100-MGSAP0 (UBEB)
Star Trac - E-UB8060 Base No Display - 9-8060-MINTP0 - Generation 1
Star Trac - Pro Recumbent 6400 - 9-6430-SINTP0
Star Trac - S-RBx - 9-3080-MINTP0 - 2007 (RBSXxxxx-xxxxxx)
Star Trac - S-RBx - 9-3150-MINTP0 (RBSXxxxx-Lxxxxx)
Star Trac - S-UBx - 9-3050-MINTP0 - 2007 (UBSX)
Star Trac - Turbo Trainer - 9-4550-MINTP0 (BTNNxxxx-Lxxxxx)

* Images may not be identical to part.