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The No.4 Lock Nuts with Nylon Inserts from Dubro's Boat Line.
Zinc plated, Stainless Steel construction. Burgundy colored nylon insert. Aircraft quality lock nuts.
(4) Lock Nuts
Thread Size: 4-40 BOX DIMENSIONS: 2.13" W. X .13" H. X 2.25" L. BOX WEIGHT: .01 LBS.