The Transmitter,pressure, cataloged under National Stock Number 6685-00-561-9339, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is General Electric Company. Government technical data includes 18 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-561-9339 |
| Primary Part Number | 21C2222-229 |
| Item Name | Transmitter,pressure |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Actuation Method | BOURDON TUBE |
| FSC Application Data | PRESSURE TRANSMITTERS,EXCEPT ENGINE |
| Phase | SINGLE LOCATION NOT OTHERWISE SPECIFIED |
| Contact Type | SOCKET |
| Current Type | AC |
| Mechanical Connection Quantity | 2 |
| Electrical Connection Quantity | 1 |
| Electrical Connection Identifying Number | SR14S2P |
| Mounting Method | PANEL W/SCREWS |
| Overall Thickness | 2.625 INCHES NOMINAL IN |
| Mechanical Connection Type | FLARED TUBE PRESSURE FITTING |
| Mechanical Connection Size | 7/16 IN.-20 THD SIZE IN |
| Contact Quantity | 4 |
| Mounting Device Quantity | 4 |
| Connector Controlling Agency | BENDIX CORP |
| Frequency Rating | 400.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| Voltage Rating | 24.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED |
| Measurement Range | +0.0 TO 100.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 21C2222-229 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 7712-30C5-1 | 3/2 Design control — primary reference U.S. Government activity |
| 7712-30C5-1 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems |
| 621C2222-229 | 5/9 Secondary reference General Semiconductor Industries Inc |
NSN 6685-00-561-9339 is a Transmitter,pressure, manufactured by General Electric Company, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-561-9339 has 1 manufacturer part number on file: 21C2222-229 (General Electric Company).
Key specifications for 21C2222-229: Actuation Method: BOURDON TUBE; FSC Application Data: PRESSURE TRANSMITTERS,EXCEPT ENGINE; Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED; Contact Type: SOCKET. 18 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.
NSN 6685-00-561-9339 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.