3/8"-16 Grade 18-8 NE Stainless Steel Nylon Insert Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND LOCKING FEATURE: PREVAILING TORQUE WITH NONMETALLIC INSERT NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.438 INCHES MINIMUM AND 0.468 INCHES MAXIMUM END ITEM IDENTIFICATION: VDS SPAN ASSY WIDTH ACROSS FLATS: 0.551 INCHES MINIMUM AND 0.564 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 16 NOMINAL THREAD SIZE: 0.375 INCHES BEARING SURFACE TYPE: CHAMFERED MATERIAL: STEEL COMP 316 OVERALL EXCEPT INSERT MATERIAL DOCUMENT AND CLASSIFICATION: SAE-J995 ASSN STD SINGLE MATERIAL RESPONSE OVERALL EXCEPT INSERT