M20-1.5 DIN 985 Class 8 Zinc Finish Steel Nylon Insert Lock Nut / THREAD CLASS: 6H THREAD DIRECTION: RIGHT-HAND NUT STYLE: A7 CONE SEAT, HEXAGON NUT HEIGHT: 18.7 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM END ITEM IDENTIFICATION: 2355-01-560-2306 MINE DETECTOR SYSTEM, VEHICLE MOUNTED WIDTH ACROSS FLATS: 29.2 MILLIMETERS MINIMUM AND 30.0 MILLIMETERS MAXIMUM THREAD SERIES: M NOMINAL THREAD SIZE: 20.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 1.50 PART NAME ASSIGNED BY CONTROLLING AGENCY: LOCK NUT MATERIAL: STEEL OVERALL MATERIAL: PLASTIC NYLON LOCKING INSERT SURFACE TREATMENT: ZINC OVERALL SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: ASTM F1941M, FE/ZN 3 AT ASSN STD SINGLE TREATMENT RESPONSE OVERALL