BlackStar H50A11 - 50 Pitch A-Plate Sprocket - 11 Tooth BB What does the H in

What does the H in 1300H200 mean

com/products/pix-spc2530-industrial-v-belt"

"mpn":"355K13-D&D"

Prefer our D&D Global equivalent: D&D Global 19/A77 Banded V-Belt - A Section

"sku":"TB072053469875"

BlackStar H50A11 - 50 Pitch A-Plate Sprocket - 11 Tooth BB What does the H inThe BlackStar H50A11 is a 50 pitch A Plate roller chain sprocket with 11 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 H50A11 Chain Pitch 50 Number of Teeth 11 Bore Type Plain Bore Hub Style A Plate Strand Count Single Material Steel Hardened Teeth Yes Outside Diameter 2. 50" Pitch Diameter