#10-24 Zinc Finish Steel with External Tooth Lockwasher K-Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND WASHER OUTSIDE DIAMETER: 0.395 INCHES MINIMUM AND 0.406 INCHES MAXIMUM OVERALL HEIGHT: 0.130 INCHES NOMINAL NUT STYLE: A300 EXTERNAL TOOTH NUT HEIGHT: 0.117 INCHES NOMINAL END ITEM IDENTIFICATION: MRAP - UNIQUE NSN - USED ON 3 MRAP VARIANTS; MRAP - COUGAR WIDTH ACROSS FLATS: 0.362 INCHES MINIMUM AND 0.375 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 24 NOMINAL THREAD SIZE: 0.190 INCHES SPECIAL FEATURES: FREE SPINNING WASHER MATERIAL: STEEL OVERALL PROPRIETARY CHARACTERISTICS: NPAC SURFACE TREATMENT: ZINC OVERALL