| FASTENER LENGTH | 0.370 INCHES MINIMUM AND 0.380 INCHES MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 50.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD DIAMETER | 0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| HEAD HEIGHT | 0.058 INCHES MINIMUM AND 0.068 INCHES MAXIMUM |
| HEAD STYLE | PAN NO. 2 |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-633-CANCELED FED SPEC 1ST MATERIAL RESPONSE OR QQ-W-409 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-633 FS FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-633 FS FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-633 FS FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-633 FS FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-633 FS FED SPEC 6TH MATERIAL RESPONSE OR QQ-S-633 FS FED SPEC 7TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OR STEEL COMP 1050 OR STEEL COMP 1551 OR STEEL COMP 1552 OR STEEL COMP 1053 OR STEEL COMP 1055 OR STEEL COMP 1060 OVERALL |
| MINIMUM TENSILE STRENGTH | 55000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.112 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.015 INCHES MINIMUM AND 0.019 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT EXTERNAL TEETH |
| WASHER QUANTITY | 1 |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-N-290,CLASS 6 TYPE 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | NICKEL OVERALL |
| THREAD LENGTH | 0.089 INCHES MINIMUM AND 0.094 INCHES MAXIMUM |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD QUANTITY PER INCH | 40 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |