| CENTER HOLE SHAPE STYLE | ROUND |
| CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR |
| HARDNESS RATING | 33.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM |
| HOLE DIAMETER | 0.333 INCHES MINIMUM AND 0.353 INCHES MAXIMUM |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A829/A829M ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASM 6350 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 6351 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 6345 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4130 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8640 OVERALL OR STEEL COMP 8740 OVERALL |
| III PART NAME ASSIGNED BY CONTROLLING AGENCY | WASHER, FLAT, SPECIAL PURPOSE |
| PERIPHERAL SHAPE STYLE | ROUND |
| PROPRIETARY CHARACTERISTICS | PACS |
| OVERALL DIAMETER | 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM |
| THICKNESS | 0.055 INCHES MINIMUM AND 0.069 INCHES MAXIMUM |