1/4"-20 Yellow Zinc Finish Grade 5 Finished Hex Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 0.188 INCHES NOMINAL END ITEM IDENTIFICATION: NSN 2320-01-097-0260 HEMTT (HEAVY EXPANDED MOBILITY TACTICAL TRUCK); NSN 2320-01-318-9902 HET (HEAVY EQUIPMENT TRANSPORTER); NSN 2320-01-304-2277 PLS (PALLETIZED LOADING SYSTEM); NSN 4210-01-486-1035 TFFT (TACTICAL FIRE FIGHTING TRUCK); 3990-01-444-5196 CEMENT MIXER WIDTH ACROSS FLATS: 0.438 INCHES NOMINAL TEMP RATING: NOT RATED THREAD SERIES: UNC THREAD QUANTITY PER INCH: 20 HARDNESS RATING: NOT RATED NOMINAL THREAD SIZE: 0.250 INCHES CRITICALITY CODE JUSTIFICATION: FEAT BEARING SURFACE TYPE: WASHER FACED SPECIAL FEATURES: WEAPON SYSTEM ESSENTIAL MATERIAL: STEEL OVERALL