1"-8 Grade 8 Zinc Finish NE Steel Nylon Insert Lock Nut / THREAD CLASS: 2B THREAD DIRECTION: RIGHT-HAND NUT STYLE: A12 HEXAGON NUT HEIGHT: 1.016 INCHES MINIMUM AND 1.078 INCHES MAXIMUM END ITEM IDENTIFICATION: TOW TRACTOR, AIRCRAFT ASSEMBLY SUSP REAR; TOW TRACTOR, A/C (P/N 4J PAV, PCC 6J9) WIDTH ACROSS FLATS: 1.427 INCHES MINIMUM AND 1.440 INCHES MAXIMUM THREAD SERIES: UNC THREAD QUANTITY PER INCH: 8 NOMINAL THREAD SIZE: 1.000 INCHES PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT, LOCK MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: SAE J995 GRADE 8 AND/OR IFI 100/107 GRADE C ASSN STD SINGLE MATERIAL RESPONSE OVERALL SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941 ASSN STD SINGLE TREATMENT RESPONSE OVERALL