-24, UNF, Overall Length 2 23/32 in, High Speed Steel, Black Oxide, Thread Length 11/16 in, 75 Percent Thread Drill Size I, Thread Limit H3, Class of Fit 3B, Thread Direction Right Hand, Number of Flutes 3.Spiral Flute Tap, Thread Size 5/16 In.
Towing Coupler, Product Type Towing Coupler, For Use With Trailer and Tow Vehicle, Gross Vehicle Weight Capacity 5,000 lb, Overall Length 4 3/4 in, Finish Zinc Plated, Features Features Holes to Accept A Safety Pin or Coupler Lock, Spring and Nut Posi-Lock Mechanism, Fits Ball Diameter 2 in, Vehicle Class Not Applicable.