SATO RACING Store › Plain Nut M6 [NUT-6] Image 1 of 1 Plain Nut M6 [NUT-6] $1.00 Plain Nut M6 / Nut M6 (part# NUT-6) is a stainless steel M6-size nut, right-hand threaded, with standard thickness. Get notified by email when this item is in stock again. Quantity: Add To Cart Added! Plain Nut M6 / Nut M6 (part# NUT-6) is a stainless steel M6-size nut, right-hand threaded, with standard thickness.