The Bath,constant Temperature, cataloged under National Stock Number 6640-01-269-9925, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Koehler Instrument Company, Inc.. Government technical data includes 20 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6640-01-269-9925 |
| Primary Part Number | K430A |
| Item Name | Bath,constant Temperature |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | Koehler Instrument Company, Inc. |
| Status | ACTIVE |
| Thermometer Opening | NOT PROVIDED |
| Inside Length | 18.000 INCHES NOMINAL IN |
| Supplementary Features | NEEDLE VALVE AND FLOWRATOR MAINTAIN AIR FLOW RATE 95 POM 5ML. PER MINUTE,THROUGH DIFFUSION STONE ASSY |
| Heating Element Quantity | 1 |
| Shape | CYLINDRICAL |
| Insulated Feature | NOT INCLUDED |
| Accessory Components and Quantity | CONTROL BOX; FLOWRATOR; DIFFUSIONSTONE ASSY; W/O THERMOMETER |
| Thermoregulator | INCLUDED |
| Capacity Rating | 1000.0 MILLILITERS NOMINAL |
| Agitator | INCLUDED |
| Inside Diameter | 12.000 INCHES NOMINAL IN |
| Test Tube Rack | NOT INCLUDED |
| Operating Temp Range | +75.0 TO 200.0 FAHRENHEIT DEGF |
| Frequency Rating | 50.0 HERTZ NOMINAL OR 60.0 HERTZ NOMINAL |
| Material | GLASS RESERVOIR |
| Mounting Type | STAND |
| Voltage Rating | 230.0 VOLTS NOMINAL |
| Pilot Light | NOT INCLUDED |
| Heating Element Type | ELECTRIC IMMERSION |
| Accuracy Range | -0.1 TO 0.1 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 |
|---|---|
| K430A PRIMARY | Koehler Instrument Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 6640-1115-0200 | 6/9 Informative reference only U.S. Government activity |
NSN 6640-01-269-9925 is a Bath,constant Temperature, manufactured by Koehler Instrument Company, Inc., classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-269-9925 has 1 manufacturer part number on file: K430A (Koehler Instrument Company, Inc.).
Key specifications for K430A: Thermometer Opening: NOT PROVIDED; Inside Length: 18.000 INCHES NOMINAL IN; Supplementary Features: NEEDLE VALVE AND FLOWRATOR MAINTAIN AIR FLOW RATE 95 POM 5ML. PER MINUTE,THROUGH DIFFUSION STONE ASSY; Heating Element Quantity: 1. 20 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.