| BEARING SURFACE TYPE | FLAT |
| HARDNESS RATING | 28.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| INSIDE WIDTH ACROSS FLATS | 2.047 INCHES MINIMUM AND 2.107 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT,ARMOR MOUNTING |
| MATERIAL | STEEL COMP 4130 OR STEEL COMP 4135 OR STEEL COMP 4137 OR STEEL COMP 4140 OR STEEL COMP 4142 OR STEEL COMP 4145 OR STEEL COMP 4330 OR STEEL COMP 4337 OR STEEL COMP 4340 OR STEEL COMP 8630 OR STEEL COMP 8635 OR STEEL COMP 8637 OR STEEL COMP 8640 OR STEEL COMP 8642 OR STEEL COMP 8645 OVERALL |
| NOMINAL THREAD SIZE | 0.500 INCHES |
| NUT HEIGHT | 0.605 INCHES MINIMUM AND 0.621 INCHES MAXIMUM |
| NUT STYLE | INTERNAL OR EXTERNAL WRENCHING HEXAGON |
| SPECIAL FEATURES | ITEM IS THREADED FULL LENGTH |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM B633,TY VI,SC2,0.3 MILS THICK ASSN STD SINGLE TREATMENT RESPONSE OVERALL EXCEPT THREADS |
| SURFACE TREATMENT | ZINC OVERALL EXCEPT THREADS |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 20 |
| THREAD SERIES | UNF |
| WIDTH ACROSS FLATS | 2.047 INCHES MINIMUM AND 2.107 INCHES MAXIMUM |