The Connector,plug,electrical, cataloged under National Stock Number 5935-01-051-1673, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-01-051-1673 |
| Primary Part Number | 1803072-9 |
| Item Name | Connector,plug,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Contact Maximum Current Rating in Amps | 22.0 SINGLE MATING END SINGLE CONTACT GROUPING |
| Connector Locking Method | INTERNALLY THREADED COUPLING RING |
| Shell Type | SOLID |
| Body Style | STRAIGHT SHAPE, INTERNAL COUPLING |
| Terminal Type | SOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING |
| Overall Diameter | 1.969 INCHES MAXIMUM IN |
| Mating End Quantity | 1 |
| Precious Material | GOLD |
| Contact Position Arrangement Style | 28-21 SINGLE MATING END |
| Shell Surface Treatment | CADMIUM |
| Insert Position in Deg | 80.0 |
| Precious Material and Weight | 0.037 GOLD GRAINS, TROY |
| Terminal Location | BACK SINGLE MATING END SINGLE CONTACT GROUPING |
| Included Contact Quantity | 37 SINGLE MATING END SINGLE CONTACT GROUPING |
| Shell Surface Treatment Document and Classification | QQ-P-416 TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.625 INCHES AND 1.750 INCHES IN |
| Included Contact Type | ROUND SOCKET SINGLE MATING END SINGLE CONTACT GROUPING |
| Contact Maximum AC Voltage Rating in Volts | 500.0 SINGLE MATING END SINGLE CONTACT GROUPING |
| Polarization Method | KEYWAY OR MULTIPLE KEYWAY |
| Contact Surface Treatment Document and Classification | MIL-G-45204 TY 1,GRADE B MIL SPEC 1ST TREATMENT RESPONSE AND QQ-N-290 CL 1,GRADE B FED SPEC 2ND TREATMENT RESPONSE SINGLE MATING END SINGLE CONTACT GROUPING |
| Environmental Protection | MOISTURE PROOF AND SALT WATER RESISTANT AND VIBRATION PROOF |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Contact Removability | NONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Class | 2A AND 2B A |
| Thread Quantity Per Inch | 18 |
| Contact Surface Treatment | GOLD AND NICKEL SINGLE MATING END SINGLE CONTACT GROUPING |
| Threaded Device Type | BACK SHELL AND COUPLING FACILITY |
| Thread Series Designator | UNEF AND UNS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1803072-9 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| PL157557-9 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1803072-9 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| MS3106R28-21SW | 5/1 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 5935-01-051-1673 is a Connector,plug,electrical, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-051-1673 has 2 manufacturer part numbers on file: 1803072-9 (Northrop Grumman Systems Corporation), PL157557-9 (Northrop Grumman Systems Corporation).
Key specifications for 1803072-9: Contact Maximum Current Rating in Amps: 22.0 SINGLE MATING END SINGLE CONTACT GROUPING; Connector Locking Method: INTERNALLY THREADED COUPLING RING; Shell Type: SOLID; Body Style: STRAIGHT SHAPE, INTERNAL COUPLING. 29 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.