Finished Hex Nuts

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Hex nuts (also referred to as finished hex nuts) are available in astm a563-a and compatible with low carbon steel bolts such as astm a307, astm f1554 grade 36, sae grade 2, and aashto m183. Sae grade 5 and grade 8 nuts are also available in a finished pattern. Since hot-dip galvanizing typically adds 2. 2 to 5 mils of thickness to the threaded portion of a fastener, galvanized hex nuts are tapped oversize to compensate for the corrosion resistant coating on the bolts.