#40 Finished Bore Sprockets
Nitro #40 Roller Chain Sprockets
#40 chain sprockets are already bored to size and include a keyway and 2 setscrews. Our #40 finished bore sprockets are manufactured from 1045CD (Cold drawn) carbon steel, which is a higher grade than most sprockets on the market. Finished bore sprockets are commonly referred to as a "type B" or "type BS" sprocket. All sprocket teeth are hardened to minimize wear overtime and these are finished with a black oxide to help resist corrosion. Nitro™ 40 sprockets work with any #40 ANSI roller chain.
Sprocket Number Nomenclature

Nitro #40 Sprocket Advantage:
- Manufactured To ANSI Standards
- Quality 1045CD Material
- Hardened Teeth To Minimize Wear
- Precision Cut Teeth
- Keyway Timed With Tooth
- Black Oxide Finish For Corrosion Resistance
$8.29
$8.64
$8.64
$8.64
$8.99
$8.99
$10.19
$10.19
$10.19
$10.19
$10.19
$10.51
$10.51
$10.51
$10.52
$10.52
$10.68
$10.68
$10.68
$10.68
$10.68
$11.33
$11.33
$11.33
$11.33
$13.96
$13.96
$13.96
$13.96
$13.96
$13.96
$14.49
$14.49
$14.49
$14.49
$14.49
$14.49
$14.49
$15.75
$15.75
$15.75
$15.75
$17.17
$17.17
$17.17
$17.17
$17.17
$17.17
$17.17
$17.17