The LOCKNUT,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL SINGLE END, design_form: PREBENT, thread_class: 3B SINGLE END, wall_thickness: 0.020 INCHES NOMINAL IN, thread_direction: RIGHT-HAND SINGLE END, seat_angle_in_deg: 33.0 SINGLE END. This product is currently in active production with full OEM support.
This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-883-2180, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.
Verify compatibility with your specific system configuration before ordering.
| material | STEEL SINGLE END |
| design_form | PREBENT |
| thread_class | 3B SINGLE END |
| wall_thickness | 0.020 INCHES NOMINAL IN |
| thread_direction | RIGHT-HAND SINGLE END |
| seat_angle_in_deg | 33.0 SINGLE END |
| mating_end_quantity | 2 SINGLE END |
| nominal_thread_size | 0.438 INCHES SINGLE END IN |
| end_connection_style | SWIVEL NUT WITH COMPRESSION SLEEVE SINGLE END |
| tube_outside_diameter | 0.250 INCHES NOMINAL IN |
| end_connection_spec/std | ANA,AN818,PART NO. AN818-4. AND MILMS20819,PART NO. MS20819-4 |
| thread_series_designator | UNIFIED NATIONAL JOINT FINE (UNJF) SINGLE END |
| NSN | 4730-00-883-2180 |
| WIDTH ACROSS FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| NUT HEIGHT | 0.680 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| NOMINAL THREAD SIZE | 0.625 INCHES IN |
| THREAD QUANTITY PER INCH | 18 |
| PACKING RECESS DEPTH | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM IN |
| MATERIAL | ALUMINUM ALLOY 6061 OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/8,T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| NUT STYLE | TUBE FITTING LOCKNUT |
| THREAD SERIES | UNF |