The Test Set Subassembly,humidity-Pr, cataloged under National Stock Number 6685-01-691-4563, 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 The Foxboro Company Dba Foxboro Environmental. Government technical data includes 1 specification, 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-691-4563 |
| Primary Part Number | 43AP-FA56C/PC BATCH-L |
| Item Name | Test Set Subassembly,humidity-Pr |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | The Foxboro Company Dba Foxboro Environmental |
| Status | ACTIVE |
| Mounting Method | PLATE |
| 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 |
|---|---|
| 43AP-FA56C/PC BATCH-L | Schneider Electric France (FRA) |
| 43AP-FA56C/PC BATCH-L PRIMARY | The Foxboro Company Dba Foxboro Environmental (USA) |
NSN 6685-01-691-4563 is a Test Set Subassembly,humidity-Pr, manufactured by The Foxboro Company Dba Foxboro Environmental, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-691-4563 has 2 manufacturer part numbers on file: 43AP-FA56C/PC BATCH-L (Schneider Electric France), 43AP-FA56C/PC BATCH-L (The Foxboro Company Dba Foxboro Environmental).
Key specifications for 43AP-FA56C/PC BATCH-L: Mounting Method: PLATE; Overall Length: 12.6 INCHES NOMINAL IN; Overall Width: 10.3 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: PNEUMATIC INDICATING CONTROLLER. 1 specification is 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.