1/4"-20 Standard Pilot 6 Projection Hex Weld Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.178 INCHES MINIMUM AND 0.198 INCHES MAXIMUM END ITEM IDENTIFICATION: 2350-01-553-4634 MINE RESISTANT VEHICLE (MRAP) WIDTH ACROSS FLATS: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 20 NOMINAL THREAD SIZE: 0.250 INCHES BEARING SURFACE TYPE: 6 PROJECTIONS 0.037-0.043 MIN-MAX INCH HIGH EACH PART NAME ASSIGNED BY CONTROLLING AGENCY: STANDARD PILOT 6 PROJECTION HEX WELD NUT SPECIAL FEATURES: PILOT DIAMETER 0.394-0.406 MIN-MAX INCH, PILOT HEIGHT 0.080-0.090 MIN-MAX INCH AND PILOT HOLE DIAMETER 0.422 NOMINAL INCH MATERIAL: STEEL OVERALL