550-057: COIL,RADIO FREQUENCY.
The COIL,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, end_similarity: NOT IDENTICAL, overall_length: 1.768 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN, first_end_style: EXTERNAL THREADED, second_end_style: UNTHREADED CROSS DRILLED, special_features: UNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B. This part is cataloged in the U.S.
Government catalog under NSN 3110-00-312-2756, 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 | COPPER ALLOY |
| end_similarity | NOT IDENTICAL |
| overall_length | 1.768 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN |
| first_end_style | EXTERNAL THREADED |
| second_end_style | UNTHREADED CROSS DRILLED |
| special_features | UNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B |
| first_end_diameter | 0.4260 INCHES MINIMUM AND 0.4290 INCHES MAXIMUM IN |
| end_item_identification | MK21MOD1 DIVING HELMET-SUPERLITE-AIR/MIXED |
| second_end_hole_diameter | 0.0920 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN |
| criticality_code_justification | FEAT |
| NSN | 3110-00-312-2756 |
| RETAINER FABRICATION METHOD | STAMPED |
| INTERNAL CLEARANCE | 0.0006 INCHES MINIMUM RADIAL AND 0.0010 INCHES MAXIMUM RADIAL IN |
| SURFACE FINISH | GROUND |
| STYLE DESIGNATOR | NON-LOADING GROOVE, NON-SEPARABLE |
| OVERALL WIDTH | 9.0 MILLIMETERS NOMINAL MM |
| OVERALL OUTSIDE DIAMETER | 47.00 MILLIMETERS NOMINAL MM |
| BORE SHAPE | STRAIGHT |
| LOAD DIRECTION | RADIAL |
| STANDARD TOLERANCE DESIGNATION | ABEC NO.3 |
| BORE DIAMETER | 30.00 MILLIMETERS NOMINAL MM |