The Thermometer,indicating,capillary, cataloged under National Stock Number 6685-00-869-9342, 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 Bellofram Corporation. Government technical data includes 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-00-869-9342 |
| Primary Part Number | 57DFFM |
| Item Name | Thermometer,indicating,capillary |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Flexible Tube Length | 36.000 INCHES NOMINAL IN |
| Bulb Overall Length | 3.250 INCHES NOMINAL IN |
| Bulb Type | FLEXIBLE CAPILLARY |
| Active Portion Diameter | 0.375 INCHES NOMINAL IN |
| Scale Inscription/background Color | BLACK MARKING ON WHITE BACKGROUND |
| Scale Smallest Increment | 1.0 DEG FAHRENHEIT |
| Bulb Connection Type | UNION |
| Dial Diameter | 2.500 INCHES NOMINAL IN |
| Indicator Connection Method | FLEXIBLE TUBE |
| Style Designator | BULB W/O SOCKET |
| Case Diameter | 3.468 INCHES NOMINAL IN |
| Pointer/pen Type and Quantity | 1 INDICATING SINGLE |
| Active Portion Length | 2.750 INCHES NOMINAL IN |
| Extension Neck Length | 0.500 INCHES NOMINAL IN |
| Scale Type | CONCENTRIC DIAL |
| Case Type | VAPORPROOF |
| Bulb Quantity | 1 |
| Bulb Tip Length | 2.750 INCHES NOMINAL IN |
| Bulb Style | PLAIN BULB W/BENDABLE EXTENSION |
| Material | STEEL METER CASE |
| Material | COPPER ALLOY BULB |
| 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 |
|---|---|
| 57DFFM PRIMARY | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| 57DFFM | 3/9 Design control — primary reference Desco Corp Marsh Bellofram Div |
| 106C7499P1 | 7/2 Vendor item drawing reference General Electric Company |
NSN 6685-00-869-9342 is a Thermometer,indicating,capillary, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-869-9342 has 1 manufacturer part number on file: 57DFFM (Bellofram Corporation).
Key specifications for 57DFFM: Flexible Tube Length: 36.000 INCHES NOMINAL IN; Bulb Overall Length: 3.250 INCHES NOMINAL IN; Bulb Type: FLEXIBLE CAPILLARY; Active Portion Diameter: 0.375 INCHES NOMINAL IN. 21 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.