| THREAD SERIES | UNF |
| NOMINAL THREAD SIZE | 0.625 INCHES |
| THREAD QUANTITY PER INCH | 18 |
| THREAD CLASS | 2B |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL | STEEL COMP 1018 OR |
| STEEL COMP 1019 OR |
| STEEL COMP 1020 OR |
| STEEL COMP 1021 OR |
| STEEL COMP 1022 OR |
| STEEL COMP 1524 OR |
| STEEL COMP 1025 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 2ND MATERIAL RESPONSE OR |
| ASTM A108 ASSN STD 3RD MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 3RD MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 4TH MATERIAL RESPONSE OR |
| ASTM A108 ASSN STD 5TH MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 5TH MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 6TH MATERIAL RESPONSE OR |
| ASTM A108 ASSN STD 7TH MATERIAL RESPONSE OR |
| ASTM A576 ASSN STD 7TH MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | OXIDE OVERALL |
| NUT STYLE | SLOTTED, HEXAGON |
| NUT HEIGHT | 0.547 INCHES MINIMUM AND |
| 0.578 INCHES MAXIMUM |
| WIDTH ACROSS FLATS | 1.750 INCHES NOMINAL |
| BEARING SURFACE TYPE | WASHER FACED |