M20-2.5 DIN 439B Class 04 Plain Finish Steel Jam Nut / NUT STYLE: A12 HEXAGON NUT HEIGHT: 9.1 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM END ITEM IDENTIFICATION: M-ATV WIDTH ACROSS FLATS: 29.2 MILLIMETERS MINIMUM AND 30.0 MILLIMETERS MAXIMUM THREAD SERIES: ISO M NOMINAL THREAD SIZE: 20.0 MILLIMETERS THREAD PITCH IN MILLIMETERS: 2.50 BEARING SURFACE TYPE: FLAT PART NAME ASSIGNED BY CONTROLLING AGENCY: NUT,JAM SPECIAL FEATURES: DRAWING SUBJECT TO EXPORT ADMINSTRATION REGULATIONS MATERIAL: STEEL OVERALL MATERIAL DOCUMENT AND CLASSIFICATION: ISO 898-2,CL 8 ASSN STD ALL MATERIAL RESPONSES OVERALL PROPRIETARY CHARACTERISTICS: NPAC