The Thermometer,self-Indicating, cataloged under National Stock Number 6685-00-286-1129, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-286-1129 |
| Item Name | Thermometer,self-Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Neck Length | 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN |
| Socket Overall Length | 6.813 INCHES NOMINAL6.813 INCHES NOMINAL IN |
| Design Type | FLUCTUATINGFLUCTUATING |
| Separable Socket Style | LAGGING EXTENSIONLAGGING EXTENSION |
| Scale Inscription/background Color | BLACK MARKING ON SILVER BACKGROUNDBLACK MARKING ON SILVER BACKGROUND |
| Scale Smallest Increment | 2.0 DEG FAHRENHEIT2.0 DEG FAHRENHEIT |
| Actuating Medium | MERCURYMERCURY |
| Features Provided | LENS MAGNIFYING FRONT AND LENS MAGNIFYING FRONT AND EXPANSION CHAMBEREXPANSION CHAMBER |
| Scale Type | METAL NONMAGNETICMETAL NONMAGNETIC |
| Nondefinitive Spec/std Data | 1 TYPE AND 3 CLASS AND C RANGE AND 3 STYLE AND B FORM |
| Bulb Tip Outside Diameter | 0.625 INCHES NOMINAL0.625 INCHES NOMINAL IN |
| External Thread Size | 3/4 IN. NPT3/4 IN. NPT IN |
| Internal Thread Size | 1-1/4 IN. -18 NEP-21-1/4 IN. -18 NEP-2 IN |
| Material | BRASS METER CASE |
| Scale Adjustment Variation | 2 DEGREE2 DEGREE |
| Tip Length | 2.625 INCHES NOMINAL2.625 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Hazardous per DLA record (HMIC Y) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| GG-T-321 | 4/1 Identification reference U.S. Government activity |
NSN 6685-00-286-1129 is a Thermometer,self-Indicating, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-00-286-1129: Neck Length: 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN; Socket Overall Length: 6.813 INCHES NOMINAL6.813 INCHES NOMINAL IN; Design Type: FLUCTUATINGFLUCTUATING; Separable Socket Style: LAGGING EXTENSIONLAGGING EXTENSION. 16 specifications are documented in the U.S. Government catalog.
Hazardous per DLA record (HMIC Y). 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.