Description & Specifications
Our 40BS12H sprocket is an ANSI standard size sprocket with a 5/8" finished bore - includes keyway & 2 setscrews. This 11 tooth sprocket works with any ANSI #40 roller chain. Nitro 40B12 sprockets are manufactured from 1045CD carbon steel and have hardened teeth to minimize wear overtime.

40B12 5/8" Sprocket Dimensions
- ANSI Chain Size:40
- Bore (D1):5/8''
- Tooth Count:12
- Pitch Diameter (dp):1.932''
- Outside Diameter (de):2.166''
- Sprocket Thickness (B1):0.284''
- Hub Diameter (dm):1-9/16''
- Length Thru Bore (LTB):7/8''
- Keyway Size:3/16'' X 3/32''
- Material:1045CD
- Hardened Teeth:Yes (HRC 40-50)
- No. Of Setscrews:2
- Type Of Finish:Black Oxide
Has recessed groove in hub for chain clearance.
Features
