ACQ Rated Fastener NoCallout Size Grade 5Fastener Thread Type CoarseFQA Compliant Fastener YesMaterial SteelMetric Or SAE SAESAE or Metric 3/8-16 In.Alternate/OEM Part Number(s): 44251Hex Flange Nut-Grade 5 - 3/8-16 x 9/16 In.