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You might not think engineers are brave.....But it took balls of steel to make the first bearings.
You might not think engineers are brave.....But it took balls of steel to make the first bearings.
40A21H-SB Type A Plate Sprocket 21 Teeth for #40 Roller Chain

40A21H-SB Type A Plate Sprocket 21 Teeth for #40 Roller Chain

$11.90
SKU 40A21H-SB
title

40A21H - SB  (5/8)" Bore

Heat Treated Type A PLATE Sprocket

for #40 Roller Chain

21 Tooth 

Outside Diameter = 3.62"

Pitch Diameter = 3.355

Free shipping in the USA!