The Connector,plug,electrical, cataloged under National Stock Number 5935-01-320-2503, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-01-320-2503 |
| Primary Part Number | 5M1749-21B75PN |
| Item Name | Connector,plug,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Connector Locking Method | BAYONET SLOT |
| Shell Type | SOLID |
| Body Style | STRAIGHT SHAPE, INTERNAL COUPLING |
| Terminal Type | CRIMP SINGLE MATING END SINGLE CONTACT GROUPING |
| Nominal Thread Length | 0.219 INCHES IN |
| Contact Material | COPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING |
| Overall Diameter | 1.641 INCHES MAXIMUM IN |
| Mating End Quantity | 1 |
| Precious Material | GOLD |
| Contact Position Arrangement Style | 21-75 SINGLE MATING END |
| Shell Surface Treatment | CADMIUM AND NICKEL |
| Insert Position in Deg | 0.0 AND 100.0 AND 128.0 AND 228.0 AND 265.0 |
| Precious Material and Weight | 0.020 GOLD GRAINS, TROY |
| Terminal Location | BACK SINGLE MATING END SINGLE CONTACT GROUPING |
| Included Contact Quantity | 4 SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.188 INCHES IN |
| Operating Temp Rating | -65.0 CELSIUS MINIMUM AND 175.0 CELSIUS MAXIMUM DEGC |
| Included Contact Type | COAXIAL PIN SINGLE MATING END SINGLE CONTACT GROUPING |
| Contact Maximum AC Voltage Rating in Volts | 400.0 SINGLE MATING END SINGLE CONTACT GROUPING |
| Polarization Method | KEY, MULTIPLE KEY GROOVE |
| Contact Surface Treatment Document and Classification | MIL-G-45204 MIL SPEC SINGLE TREATMENT RESPONSE SINGLE MATING END SINGLE CONTACT GROUPING |
| Environmental Protection | MOISTURE PROOF AND SALT WATER RESISTANT AND VIBRATION PROOF AND CORROSION RESISTANT AND DUST RESISTANT AND FUEL RESISTANT AND FUNGUS RESISTANT AND HUMIDITY RESISTANT AND OIL RESISTANT AND SHOCK RESISTANT AND THERMAL SHOCK RESISTANT AND VIBRATION RESISTANT |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Contact Removability | REMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Contact Surface Treatment | GOLD SINGLE MATING END SINGLE CONTACT GROUPING |
| Threaded Device Type | BACK SHELL |
| 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 |
|---|---|
| 5M1749-21B75PN PRIMARY | The Boeing Company Div Defense (USA) |
| LJT06RT-21-75P(014) | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
| Reference | Meaning |
|---|---|
| 10135770 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5935-01-320-2503 is a Connector,plug,electrical, manufactured by The Boeing Company Div Defense, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-320-2503 has 2 manufacturer part numbers on file: 5M1749-21B75PN (The Boeing Company Div Defense), LJT06RT-21-75P(014) (Amphenol Corp Div Amphenol Aerospace Operations).
Key specifications for 5M1749-21B75PN: Connector Locking Method: BAYONET SLOT; Shell Type: SOLID; Body Style: STRAIGHT SHAPE, INTERNAL COUPLING; Terminal Type: CRIMP SINGLE MATING END SINGLE CONTACT GROUPING. 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.