BlackStar H10B37 - British Standard Sprocket - #10 Pitch 37 Tooth stainless-steel "text": "The 12/3VX530 is used

"text": "The 12/3VX530 is used for high-shock and high-vibration drives

The Gates QD8C18

25T5/230US has a 5 mm tooth pitch

so a 2/5V975 from any major manufacturer shares the same cross-section and length and runs on the same sheaves

What does the S5M in 100-S5M-1270 mean

BlackStar H10B37 - British Standard Sprocket - #10 Pitch 37 Tooth stainless-steel "text": "The 12/3VX530 is usedThe BlackStar H10B37 is a British Standard #10 pitch B Hub roller chain sprocket with 37 teeth, manufactured from steel. British Standard sprockets meet ISO 606 specifications for chain drives in metric and imperial European applications. Plain bore design finish to required shaft size during installation. Specifications Part Number H10B37 Product Type British Standard Sprocket Standard ISO 606 British Standard #10 Chain Pitch #10 Hub Style B Hub