3/8"-24 SAE J995 Grade 5 Zinc Finish Steel Jam Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.2100 INCHES MINIMUM AND 0.2270 INCHES MAXIMUM END ITEM IDENTIFICATION: MRAP - COMMON NSN - USED ON 4 MRAP VARIANTS AND 1 OTHER WEAPON SYSTEM; MRAP MAXXPRO DASH ISS W/OGPK AND W/CROWS; ARMORED MULTI-PURPOSE VEHICLE (AMPV) WIDTH ACROSS FLATS: 0.5510 INCHES MINIMUM AND 0.5630 INCHES MAXIMUM THREAD SERIES: UNF THREAD QUANTITY PER INCH: 24 NOMINAL THREAD SIZE: 0.375 INCHES BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT, 3/8-NF JAM TYPE 5 MATERIAL: STEEL OVERALL PROPRIETARY CHARACTERISTICS: NPAC SURFACE TREATMENT: ZINC OVERALL