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|This product doesnt fit any of your saved vehicles||Check Fit for another vehicle|
|Gasket Or Seal Included:||Yes|
|Thread Size:||1/2 in.-20 D.O.|
|Under Head Length:||0.626 in|
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Q:is the diameter of this bolt 20m
A:Hi Jon, I'm glad to assist you! Its hex size is 3/4 inch. The inner diameter of the gasket is 0.578 inch and the outer diameter is 0.812 inch.
Q:What size tap does this take? I tried a 1/2-20 NF but it is too small.
A:We greatly appreciate your interest in Advance Auto Parts. Please visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you on this Dorman - Autograde Oil Drain Plug Piggyback 1/2 Inch-20 D.O., Head Size 3/4 Inch - part# 65209.