The Control,temperature,indicating, cataloged under National Stock Number 6685-01-491-3877, 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 Johnson Controls Inc Control Products Div. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-491-3877 |
| Primary Part Number | A19AAD-25D |
| Item Name | Control,temperature,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Johnson Controls Inc Control Products Div |
| Status | ACTIVE |
| Sensing Element Type | BULB REMOTE |
| Maximum Overall Width | 2.160 INCHES IN |
| Inclosure Type | ENCASED |
| Maximum Overall Length | 4.410 INCHES IN |
| Maximum Overall Height | 2.160 INCHES IN |
| Mounting Method | PANEL |
| Power Source | EXTERNAL |
| Terminal Location | BACK |
| Terminal Type and Quantity | 1 SCREW |
| Operating Temp Range | -10.0 TO 50.0 FAHRENHEIT DEGF |
| Maximum Voltage Rating in Volts | 120.0 AC |
| Material | STEEL OR ALUMINUM CASE |
| 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 |
|---|---|
| A19AAD-25D PRIMARY | Johnson Controls Inc Control Products Div (USA) |
| Reference | Meaning |
|---|---|
| A19AAD-25D | 5/2 Secondary reference U.S. Government activity |
| 500D1902 | D/9 Drawing number reference only U.S. Government activity |
NSN 6685-01-491-3877 is a Control,temperature,indicating, manufactured by Johnson Controls Inc Control Products Div, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-491-3877 has 1 manufacturer part number on file: A19AAD-25D (Johnson Controls Inc Control Products Div).
Key specifications for A19AAD-25D: Sensing Element Type: BULB REMOTE; Maximum Overall Width: 2.160 INCHES IN; Inclosure Type: ENCASED; Maximum Overall Length: 4.410 INCHES IN. 12 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.