Stens 635-292 Chain Saw Bar Nut 5-Pack Replaces Stihl 0000 955 0801 GB BN1 Chain saw bar nut replacement For small engine outdoor power equipment; stens part number 635-292 Replaces Stihl 0000 955 0801 GB BN1 Pack of 5 nuts Measures 8 millimeter by 1.25 thd