Corrision Resistance NL-19 surface treatment, not a coating High Perfomance Stainless Steel Fasteners Package Dimensions: 6 L x 6H x6W(inches)
ANSI B18.5, 18-8 stainless steel, carriage bolt, thread 3/8"-16, max. Dia head .844", height.208", max sq. Depth .219", max. Sq. width .388, fully threaded, treaded with nl-19 surface treatment,.