Go Back A Groove Pulleys Item: CA0250X037 Zinc Die Cast Pulleys are non-corrosive, non-toxic, spark-free and impact resistant. Available with or without keyway, furnished with socket head set screws. Strong-Rugged built to last! Request Information Spec Measure Bore Size3/8 OD2 1/2 Pitch Dia.2 1/4 L7/8 G5/8 C7/16 TypeSolid KeywayNo Keyway Set Screw Size5/16-18 Weight0.36 4L Belt Max Pitch Dia.4.30 4L Belt Min Pitch Dia.3.30 4L Belt Turn Open0.00 4L Belt Turns Open7.00 5L Belt Max Pitch Dia.4.50 5L Belt Min Pitch Dia.3.70 5L Belt Turn Open1.00 5L Belt Turns Open7.00 G Min0.469 G Max0.875 Style1