| DISTANCE ACROSS FLATS | 0.429 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| OVERALL LENGTH | 2.000 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | BRITISH STANDARD S143 NATIONAL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | STEEL CORROSION RESISTING |
| NOMINAL THREAD SIZE | 0.190 INCHES NUT THREAD |
| NOMINAL THREAD SIZE | 0.250 INCHES STUD THREAD |
| NUT END SHANK DIAMETER | 0.2485 INCHES MINIMUM AND 0.2494 INCHES MAXIMUM |
| NUT END SHANK LENGTH | 0.420 INCHES MINIMUM AND 0.430 INCHES MAXIMUM |
| SHOULDER LENGTH | 0.150 INCHES MINIMUM |
| SPECIAL FEATURES | ONE HOLE IN NUT END 0.078 IN.NOM DIA |
| STUD END SHANK DIAMETER | 0.2495 INCHES MINIMUM AND 0.2504 INCHES MAXIMUM |
| STUD END SHANK LENGTH | 0.690 INCHES NOMINAL |
| STYLE DESIGNATOR | SHOULDERED AND STEPPED |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | S26-13 FSCM K0289 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3A NUT THREAD |
| THREAD CLASS | 3A STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| THREAD DIRECTION | RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.350 INCHES NOMINAL STUD THREAD |
| THREAD LENGTH | 0.390 INCHES MINIMUM AND 0.400 INCHES MAXIMUM NUT THREAD |
| THREAD QUANTITY PER INCH | 28 STUD THREAD |
| THREAD QUANTITY PER INCH | 32 NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJF NUT THREAD |
| THREAD SERIES DESIGNATOR | UNJF STUD THREAD |