The Adapter,connector, cataloged under National Stock Number 5935-00-787-2128, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Airgas Safety, Inc. Dba Airgas. Government technical data includes 29 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5935-00-787-2128 |
| Primary Part Number | 57975 |
| Item Name | Adapter,connector |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Airgas Safety, Inc. Dba Airgas |
| Status | ACTIVE |
| Connector Locking Method | BAYONET PIN AND EXTERNALLY THREADED SHELL |
| Shell Type | SOLID |
| Body Style | STRAIGHT SHAPE |
| Contact Material | COPPER ALLOY ALL MATING ENDS SINGLE CONTACT GROUPING |
| Bushing Accommodation Hole Shape | ROUND |
| Overall Diameter | 0.755 INCHES MAXIMUM IN |
| Mating End Quantity | 2 |
| Precious Material | SILVER |
| Contact Position Arrangement Style | NONSTD ALL MATING ENDS |
| Shell Surface Treatment | SILVER |
| Precious Material and Weight | 0.110 SILVER GRAINS, TROY |
| Shell Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE |
| Included Contact Quantity | 1 ALL MATING ENDS SINGLE CONTACT GROUPING |
| Shell Surface Treatment Document and Classification | QQ-S-365 FED SPEC SINGLE TREATMENT RESPONSE |
| Thread Direction | RIGHT-HAND |
| Mounting Facility Thickness | 0.125 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES AND 0.500 INCHES IN |
| Included Contact Type | COAXIAL SOCKET ALL MATING ENDS SINGLE CONTACT GROUPING |
| Contact Maximum AC Voltage Rating in Volts | 500.0 ALL MATING ENDS SINGLE CONTACT GROUPING |
| Contact Surface Treatment Document and Classification | QQ-S-365,TYPE 2,GRADE A FED SPEC SINGLE TREATMENT RESPONSE ALL MATING ENDS SINGLE CONTACT GROUPING |
| Environmental Protection | CORROSION RESISTANT AND PRESSURE PROOF AND SALT WATER RESISTANT |
| Precious Material and Location | CONTACT AND SHELL SURFACES SILVER |
| Distance From Mounting Shoulder to Front Face | 0.719 INCHES NOMINAL IN |
| Contact Removability | NONREMOVABLE ALL MATING ENDS SINGLE CONTACT GROUPING |
| Thread Class | 2A A |
| Contact Material Document and Classification | QQ-B-613 FED SPEC SINGLE MATERIAL RESPONSE ALL MATING ENDS SINGLE CONTACT GROUPING |
| Thread Quantity Per Inch | 32 AND 28 |
| Contact Surface Treatment | SILVER ALL MATING ENDS SINGLE CONTACT GROUPING |
| Threaded Device Type | COUPLING FACILITY AND MOUNTING BUSHING |
| 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 |
|---|---|
| 57975 | Airgas Safety, Inc. Dba Airgas (USA) |
| Reference | Meaning |
|---|---|
| 357-9437-00 | 3/9 Design control — primary reference Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| 0993A | 5/1 Secondary reference U.S. Government activity |
NSN 5935-00-787-2128 is a Adapter,connector, manufactured by Airgas Safety, Inc. Dba Airgas, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-00-787-2128 has 1 manufacturer part number on file: 57975 (Airgas Safety, Inc. Dba Airgas).
1 possible match (shared part number, not a government interchangeability claim): 4120-01-705-4790. Verify interchangeability with system specifications before substitution.
Key specifications for 57975: Connector Locking Method: BAYONET PIN AND EXTERNALLY THREADED SHELL; Shell Type: SOLID; Body Style: STRAIGHT SHAPE; Contact Material: COPPER ALLOY ALL MATING ENDS 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.