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FREE GROUND SHIPPING IN THE USA! ****SALE 20% off all V Belts by MBL****
****SALE 20% off all V Belts by MBL****

Sprocket 40B21 Heat Treated Type B for #40 Roller Chain 21 Tooth

SKU 40B21H-5/8

40B21H Type B Sprocket


Finished Bore W/Keyway and Set Screws

For #40 Roller Chain

21 Tooth

Outside Diameter = 3.620"

Pitch Diameter = 3.655"

LTB = 1"

Hub Diameter = 2 3/4"


FREE SHIPPING in Lower 48 States


Buy 2 or More Type B Sprockets and Take 10% Off at Checkout!

Use coupon code:   K1E3BE3RHDZC 

Coupon not for use with Quantity Discount Items