| EXTENDED WASHER DIAMETER | 0.921 INCHES MINIMUM AND 0.937 INCHES MAXIMUM |
| EXTENDED WASHER THICKNESS | 0.255 INCHES MINIMUM AND 0.275 INCHES MAXIMUM |
| FASTENER LENGTH | 3.469 INCHES MINIMUM AND 3.531 INCHES MAXIMUM |
| GRIP LENGTH | 0.6163 INCHES MINIMUM AND 0.6250 INCHES MAXIMUM |
| HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.616 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| HEAD STYLE | DOUBLE HEXAGON EXTENDED WASHER |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-5000 MIL SPEC 2ND MATERIAL RESPONSE OR ASTM A29 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 4140 OR STEEL COMP E4340 OR STEEL COMP 8640 OVERALL |
| MINIMUM TENSILE STRENGTH | 150000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.625 INCHES |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | A000 FED STD 3RD TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 2.219 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 11 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| WIDTH BETWEEN FLATS | 0.620 INCHES MINIMUM AND 0.628 INCHES MAXIMUM |