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A.N.S.I. No. 40-3 Chain - Type B Hub One Side - Type C Hub Both Sides - Hardened Through 26 Teeth - Mandrel Bore - 1/2" Pitch

Catalog # 40-3B20H

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Pitch Diameter Maximum Bore Stock Bore Hub Diameter Length Through Bore Sprocket Weight
3.196 1.750" .750" 2.65" 2.250" 3.60lbs

Listed maximum bore is with setscrew at angle to keyway. Larger bores are subject to additional charge.