The Control,temperature,indicating, cataloged under National Stock Number 6685-01-121-6891, 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. Dba Johnson Controls. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-121-6891 |
| Primary Part Number | 27-2850-81 |
| Item Name | Control,temperature,indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Johnson Controls, Inc. Dba Johnson Controls |
| Status | ACTIVE |
| Maximum Overall Width | 3.750 INCHES IN |
| Inclosure Type | ENCASED |
| Maximum Overall Length | 3.070 INCHES IN |
| Maximum Overall Height | 5.250 INCHES IN |
| Mounting Method | BULKHEAD |
| Supplementary Features | DIRECT ACTING |
| Power Source | EXTERNAL |
| Operating Temp Range | +110.0 TO 240.0 FAHRENHEIT DEGF |
| Type/model Designation | T-8000 |
| 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 |
|---|---|
| 27-2850-81 PRIMARY | Johnson Controls, Inc. Dba Johnson Controls (USA) |
| Reference | Meaning |
|---|---|
| 27-2850-81 | 5/9 Secondary reference Johnson Controls, Inc Div Building Efficiency |
| T-8000 | 5/9 Secondary reference Johnson Controls, Inc Div Building Efficiency |
NSN 6685-01-121-6891 is a Control,temperature,indicating, manufactured by Johnson Controls, Inc. Dba Johnson Controls, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-121-6891 has 1 manufacturer part number on file: 27-2850-81 (Johnson Controls, Inc. Dba Johnson Controls).
10 possible matches (shared part number, not a government interchangeability claim): 6685-01-121-6892, 6685-01-122-1705, 6685-01-122-1706. Verify interchangeability with system specifications before substitution.
Key specifications for 27-2850-81: Maximum Overall Width: 3.750 INCHES IN; Inclosure Type: ENCASED; Maximum Overall Length: 3.070 INCHES IN; Maximum Overall Height: 5.250 INCHES IN. 9 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.