| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES NOMINAL |
| FASTENER LENGTH | 1.420 INCHES NOMINAL |
| FEATURES PROVIDED | CASEHARDENED |
| HARDNESS RATING | 170.0 BRINELL STANDARD MINIMUM AND 248.0 BRINELL STANDARD MAXIMUM OVERALL |
| HEAD HEIGHT | 0.160 INCHES NOMINAL |
| HEAD DIAMETER | 0.820 INCHES NOMINAL |
| HEAD STYLE | PAN NO. 2 |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-634 FED SPEC 1ST MATERIAL RESPONSE OR QQ-S-634 FED SPEC 2ND MATERIAL RESPONSE OR QQ-S-634 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-634 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-631 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-634 FED SPEC 6TH MATERIAL RESPONSE OR QQ-S-634 FED SPEC 7TH MATERIAL RESPONSE OR QQ-S-631 FED SPEC 8TH MATERIAL RESPONSE OR QQ-S-631 FED SPEC 9TH MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1029 OR STEEL COMP 1030 OVERALL |
| MINIMUM TENSILE STRENGTH | 110000 POUNDS PER SQUARE INCH |
| NOMINAL THREAD DIAMETER | 0.500 INCHES |
| RIB MAJOR DIAMETER | 0.618 INCHES MINIMUM AND 0.628 INCHES MAXIMUM |
| RIB QUANTITY | 39 |
| RIB LENGTH | 0.120 INCHES NOMINAL |
| SHOULDER DIAMETER | 0.6020 INCHES MINIMUM AND 0.6050 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SHOULDER LENGTH | 0.340 INCHES MINIMUM AND 0.350 INCHES MAXIMUM FIRST SHOULDER |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 3A |
| THREAD LENGTH | 0.960 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 20 |