Ariens replace scraper blade

have a 32" 10hp ariens 924073
need part# ariens 02437300 scraper blade 32"
http://www.youtube.com/watch?v=qceJfmXMLKI
suppliers:
http://www.rcpw.com/ariens-parts/genuine/02437300.html
http://www.repairclinic.com/PartDetail/Scraper-Blade/02437300/1763113
http://www.arienspartsdirect.com/product_info.php?cPath=1&products_id=2666

06215700

Bolt-Round Head Square Neck .31-18 x .75 Grade 5

$1.45

Washer-Flat-Steel .38 x .88 x .083
Nut-Locking-Center .31-18 




low temp grease (synthetic is good)

interesting video to create keyway:
http://www.youtube.com/watch?v=3DDraOqqg1g