The MARTIN SPROCKET & GEAR brand Gear Spur 20 Deg Steel, TS1040 has a pitch of 10, a pitch diameter of 4 inches, a face width of 1.25 inches, an outside diameter of 4.2 inches, a pressure angle of 20 degrees, a hub projection of 0.875 inches, a hub diameter of 3.5 inches, a weight of 6.4, no keyway, 40 teeth, a storage height of 2.125 inches, a length through bore of 2.125 inches, a maximum bore of 2.125 inches, a reboreable bore type, a B gear type, no set screw size, no enlarged OD with special tooth form, a minimum bore of 1, a B hub style, a storage length of 4.2 inches, and a storage width of 4.2 inches.
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