SATO RACING Store › Reverse Jam Nut M6 [JNT-6L] Image 1 of 1 Reverse Jam Nut M6 [JNT-6L] $2.50 Stainless steel M6-size Reverse Jam Nut (part# JNT-6L) for use with SATO RACING Rear Sets. Left-hand threaded. Get notified by email when this item is in stock again. Quantity: Add To Cart Added! Stainless steel M6-size Reverse Jam Nut (part# JNT-6L) for use with SATO RACING Rear Sets. Left-hand threaded.