BlackStar H120A21Q - 120 Pitch A-Plate Sprocket - 21 Tooth 4L Section "mpn":"1000-S14M-1512-D&D"

"mpn":"1000-S14M-1512-D&D"

Prefer our Diesel Belting equivalent: AT5-545-20 Timing Belt AT5 20mm x 545mm OC Diesel Belting

so a 2/D345 from any major manufacturer shares the same dimensions and runs on the same pulleys/sheaves

What does the 8M in 2736-8M-85 mean

BlackStar H120A21Q - 120 Pitch A-Plate Sprocket - 21 Tooth 4L Section "mpn":"1000-S14M-1512-D&D"The BlackStar H120A21Q is a 120 pitch A Plate roller chain sprocket with 21 teeth, precision manufactured from SAE 1045 steel with induction hardened teeth for extended wear life and features machine cut tooth profiles for smooth, reliable chain engagement. Specifications Part Number H120A21Q Chain Pitch 120 Number of Teeth 21 Bore Type Plain Bore Hub Style A Plate Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 10. 85" Pitch