I can always trust SweepScrub to have the part I need at a great price.
SCREW HEX HD UNI-5739 M8X40
Fits Nilfisk Advance 33003998 (alt # 33003998)Collections: All, Clarke Floor Scrubber, Vacuum, and Extractor Parts, Floor Cleaning Equipment Parts | Shop Online, Newest Products, Nilfisk Advance OEM, Nilfisk Advance OEM Parts, Nilfisk Advance OEM Replacement Parts, Non-Equipment Items for Sale, OEM & Aftermarket Floor Machine Parts, OEM Parts, OrderlyEmails - Recommended Products