The Connector,receptacle,electrical, cataloged under National Stock Number 5935-00-978-4256, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Microwave Devices Inc. Government technical data includes 23 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-00-978-4256 |
| Primary Part Number | 4818-1 |
| Item Name | Connector,receptacle,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Microwave Devices Inc |
| Status | ACTIVE |
| Connector Locking Method | BAYONET PIN |
| Shell Type | SOLID |
| Body Style | STRAIGHT SHAPE, EXTERNAL COUPLING |
| Terminal Type | SOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING |
| Bushing Accommodation Hole Shape | ROUND W/FLAT |
| Overall Diameter | 0.625 INCHES NOMINAL IN |
| Mating End Quantity | 1 |
| Contact Position Arrangement Style | BNC SINGLE MATING END |
| Terminal Location | BACK SINGLE MATING END SINGLE CONTACT GROUPING |
| Included Contact Quantity | 1 SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.500 INCHES IN |
| Included Contact Type | COAXIAL SOCKET SINGLE MATING END SINGLE CONTACT GROUPING |
| Connector Cable Strain Relief Method | CABLE CLAMP |
| Contact Removability | NONREMOVABLE SINGLE MATING END SINGLE CONTACT GROUPING |
| Thread Class | 2A A |
| Cable Entrance Diameter | 0.217 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 28 |
| Threaded Device Type | MOUNTING BUSHING |
| Thread Series Designator | UNEF |
| Radio Frequency Type Contact Characteristic Impedance in Ohms | 50.0 SINGLE MATING END SINGLE CONTACT GROUPING |
| Insert Material | PLASTIC SINGLE MATING END |
| Shell Material | COPPER ALLOY |
| 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 |
|---|---|
| 4818-1 PRIMARY | Microwave Devices Inc (USA) |
| Reference | Meaning |
|---|---|
| GC811K1 | C/1 Advisory reference — outside the item-of-supply concept Northrop Grumman Systems Corporation |
| 4818-1 | 5/9 Secondary reference Amphenol Corporation Div Amphenol Rf |
| 114-264-0001 | 7/2 Vendor item drawing reference U.S. Government activity |
| 31-4818-1 | 5/9 Secondary reference Amphenol Corporation Div Amphenol Rf |
NSN 5935-00-978-4256 is a Connector,receptacle,electrical, manufactured by Microwave Devices Inc, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-00-978-4256 has 1 manufacturer part number on file: 4818-1 (Microwave Devices Inc).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-265-8585. Verify interchangeability with system specifications before substitution.
Key specifications for 4818-1: Connector Locking Method: BAYONET PIN; Shell Type: SOLID; Body Style: STRAIGHT SHAPE, EXTERNAL COUPLING; Terminal Type: SOLDER WELL SINGLE MATING END SINGLE CONTACT GROUPING. 23 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.