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Join Date: Feb 2008
Location: New Orleans, LA, USA
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Bikes: '59 Raleigh Lenton, '86 Peugeot PSN-10 Triathalon, '84 Peugeot PGN-10, 8? Peugeot UE-18, Peugeot NS-540, '86 Giant Iguana (Xtracycle), Holdsworth Gemini tandem, Surly Cross Check fixie, '86 Centurion MV Ironman
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Those are Sugino Autex self-extracting bolts. The tabbed washer is only used when installed the Autex core into the crank arm - once it's in you use the 6mm allen wrench to install/remove the cranks and the core stays in place. So unless you're removing the core you don't really need the washer (it'd be nice to have, though.)
I recently tried the Autex system on my Fuji and could not really get enough torque with the 6mm wrench; ended up removing them and using standard 8mm crank arm bolts.