The Thermometer,self-Indicating,bime, cataloged under National Stock Number 6685-01-368-1383, 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 Weiss Instruments, Inc.. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-368-1383 |
| Primary Part Number | 3RBM25-50/550 DEG F W/GLASS |
| Item Name | Thermometer,self-Indicating,bime |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Weiss Instruments, Inc. |
| Status | ACTIVE |
| Stem Length | 2.500 INCHES NOMINAL IN |
| Dial Diameter | 3.000 INCHES NOMINAL IN |
| Style Designator | STRAIGHT FORM, HORIZONTAL DIAL |
| Scale Type | DIAL |
| Scale Measurement Range | +50.000 TO 550.000 DEG FAHRENHEIT |
| 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 |
|---|---|
| 3RBM25-50/550 DEG F W/GLASS PRIMARY | Weiss Instruments, Inc. (USA) |
| 30CI60R-025-50/550 F PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| 573-3-05 | 5/2 Secondary reference U.S. Government activity |
NSN 6685-01-368-1383 is a Thermometer,self-Indicating,bime, manufactured by Weiss Instruments, Inc., classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-368-1383 has 2 manufacturer part numbers on file: 3RBM25-50/550 DEG F W/GLASS (Weiss Instruments, Inc.), 30CI60R-025-50/550 F (Ashcroft Inc Dba Heise).
Key specifications for 3RBM25-50/550 DEG F W/GLASS: Stem Length: 2.500 INCHES NOMINAL IN; Dial Diameter: 3.000 INCHES NOMINAL IN; Style Designator: STRAIGHT FORM, HORIZONTAL DIAL; Scale Type: DIAL. 5 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.