| THREAD SERIES DESIGNATOR | UNF |
| NOMINAL THREAD DIAMETER | 0.190 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.598 INCHES MINIMUM AND |
| 0.690 INCHES MAXIMUM |
| FASTENER LENGTH | 0.660 INCHES MINIMUM AND |
| 0.690 INCHES MAXIMUM |
| MATERIAL | STEEL COMP 1050 PRIMARY WASHER |
| STEEL FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE ASSN STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| GM 6010-M FSCM 16764 MFR REF SINGLE MATERIAL RESPONSE FASTENER |
| SURFACE TREATMENT | ZINC AND |
| DICHROMATE OVERALL |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | GM 4342-M CODE Z0D48 FSCM 16764 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| HARDNESS RATING | 44.0 ROCKWELL C MINIMUM AND |
| 48.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | PAN NO. 2 |
| HEAD DIAMETER | 0.306 INCHES MINIMUM AND |
| 0.322 INCHES MAXIMUM |
| HEAD HEIGHT | 0.085 INCHES MINIMUM AND |
| 0.096 INCHES MAXIMUM |
| INTERNAL DRIVE STYLE | SLOT |
| WASHER QUANTITY | 1 |
| PRIMARY WASHER STYLE | FLAT |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.370 INCHES MINIMUM AND |
| 0.380 INCHES MAXIMUM |
| PRIMARY WASHER MATERIAL THICKNESS | 0.017 INCHES MINIMUM AND |
| 0.023 INCHES MAXIMUM |