I can always trust SweepScrub to have the part I need at a great price.
Ignition Key (2 included) : Fits Tennant 140, 5680, 5700, S10, SWP 3700 AND Nobles Scout 37B
Fits Tennant 222684Collections: All, Ebay/Amazon Tennant 3-6-15, Electrical Parts, Floor Cleaning Equipment Parts | Shop Online, Newest Products, Nobles Scout 37B Parts, Non-Equipment Items for Sale, OEM, OEM & Aftermarket Floor Machine Parts, OEM Parts, OrderlyEmails - Recommended Products, Switches / Key, Tennant 140 Walkbehind sweeper Parts, Tennant 5680 Parts, Tennant 5700 Parts, Tennant Cross Over Parts, Tennant OEM, Tennant Parts | OEM and Aftermarket Replacement Parts, Tennant S10 Parts, Tennant Scrubber Parts, Tennant Small Equipment & Carpet Extractor Parts, Tennant Sweeper Parts, Tennant Sweeper/Scrubber Parts