The Adapter,connector, cataloged under National Stock Number 5935-01-066-3553, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Alliant Techsystems Operations Llc Div Defense Electronic Systems. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5935-01-066-3553 |
| Primary Part Number | 1201990-2 |
| Item Name | Adapter,connector |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Alliant Techsystems Operations Llc Div Defense Electronic Systems |
| Status | ACTIVE |
| Contact Maximum Current Rating in Amps | 2.0 ALL MATING ENDS ALL CONTACT GROUPINGS |
| Connector Locking Method | INTERNALLY THREADED COUPLING NUT AND EXTERNALLY THREADED SHELL |
| Shell Type | SOLID |
| Body Style | STRAIGHT SHAPE, INTERNAL COUPLING |
| Contact Material | COPPER ALLOY ALL MATING ENDS ALL CONTACT GROUPINGS |
| Overall Diameter | 0.312 INCHES NOMINAL IN |
| Mating End Quantity | 2 |
| Precious Material | GOLD |
| Contact Position Arrangement Style | NONSTD ALL MATING ENDS |
| Shell Surface Treatment | PASSIVATE |
| Contact Maximum Frequency Rating | 18000.0 MEGAHERTZ ALL MATING ENDS ALL CONTACT GROUPINGS |
| Insert Material Document and Classification | MIL-P-19468 MIL SPEC SINGLE MATERIAL RESPONSE ALL MATING ENDS |
| Precious Material and Weight | 0.002 GOLD GRAINS, TROY |
| Shell Material Document and Classification | QQ-S-764,CL 303,COND A FED SPEC SINGLE MATERIAL RESPONSE |
| Included Contact Quantity | 1 FIRST MATING END ALL CONTACT GROUPINGS |
| Included Contact Quantity | 1 SECOND MATING END ALL CONTACT GROUPINGS |
| Shell Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Included Contact Type | COAXIAL SOCKET SECOND MATING END ALL CONTACT GROUPINGS |
| Included Contact Type | COAXIAL PIN FIRST MATING END ALL CONTACT GROUPINGS |
| Contact Maximum AC Voltage Rating in Volts | 250.0 ALL MATING ENDS ALL CONTACT GROUPINGS |
| Contact Surface Treatment Document and Classification | MIL-G-45204 TY 1,GRADE C,CL 2 MIL SPEC 2ND TREATMENT RESPONSE AND MIL-C-14550,CL IV MIL SPEC 1ST TREATMENT RESPONSE ALL MATING ENDS ALL CONTACT GROUPINGS |
| Environmental Protection | HUMIDITY RESISTANT AND SALT WATER RESISTANT AND SHOCK RESISTANT AND VIBRATION RESISTANT |
| Precious Material and Location | CONTACT SURFACES GOLD |
| Contact Removability | NONREMOVABLE ALL MATING ENDS ALL CONTACT GROUPINGS |
| Thread Class | 2B AND 2A A |
| Contact Material Document and Classification | QQ-C-530 FED SPEC SINGLE MATERIAL RESPONSE ALL MATING ENDS ALL CONTACT GROUPINGS |
| Thread Quantity Per Inch | 36 |
| 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 |
|---|---|
| 1201990-2 PRIMARY | Alliant Techsystems Operations Llc Div Defense Electronic Systems (USA) |
| W41250-N6403-A77 | Hensoldt Sensors Gmbh (DEU) |
| R 125 704 001 | Radiall Gesellschaft Mit Beschrankter Haftung Elektronische Bauelemente (DEU) |
| Reference | Meaning |
|---|---|
| 50-674-0000-89 | 5/2 Secondary reference U.S. Government activity |
| 2082-0000-02 | 5/9 Secondary reference Tyco Electronics Corp |
NSN 5935-01-066-3553 is a Adapter,connector, manufactured by Alliant Techsystems Operations Llc Div Defense Electronic Systems, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-066-3553 has 3 manufacturer part numbers on file: 1201990-2 (Alliant Techsystems Operations Llc Div Defense Electronic Systems), W41250-N6403-A77 (Hensoldt Sensors Gmbh), R 125 704 001 (Radiall Gesellschaft Mit Beschrankter Haftung Elektronische Bauelemente).
Key specifications for 1201990-2: Contact Maximum Current Rating in Amps: 2.0 ALL MATING ENDS ALL CONTACT GROUPINGS; Connector Locking Method: INTERNALLY THREADED COUPLING NUT AND EXTERNALLY THREADED SHELL; 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.