Hex nut with a Nylon Insert to prevent loosening from vibration, INCH and METRIC.
5/8"-11 and 5/8"-18 for use with medium strength fasteners.
Coarse Thread, 5/8"-11 for use with medium strength fasteners.
NM (Standard Height), COARSE thread, #4-40 thru 1 1/4"-7.
NM (Standard Height) FINE thread, #4-48 thru 1"-14.
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