The Viscometer,tube Type, cataloged under National Stock Number 6630-01-674-4737, is classified within Federal Supply Class 6630 (Chemical Analysis Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Koehler Instrument Company, Inc.. Government technical data includes 2 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6630-01-674-4737 |
| Primary Part Number | K21410 |
| Item Name | Viscometer,tube Type |
| FSC / FSG | 6630 / 66 — Chemical Analysis Instruments |
| Manufacturer | Koehler Instrument Company, Inc. |
| Status | ACTIVE |
| Voltage in Volts and Current Type | 115.0 AC |
| Material | STEEL CORROSION RESISTING |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| K21410 PRIMARY | Koehler Instrument Company, Inc. (USA) |
NSN 6630-01-674-4737 is a Viscometer,tube Type, manufactured by Koehler Instrument Company, Inc., classified under FSC 6630, Chemical Analysis Instruments. Status: active.
NSN 6630-01-674-4737 has 1 manufacturer part number on file: K21410 (Koehler Instrument Company, Inc.).
Key specifications for K21410: Voltage in Volts and Current Type: 115.0 AC; Special Features: MICROPROCESSOR BASED BATH PROVIDES HIGH-ACCURACY TEMPERATURE CONTROL; RESERVOIR CAPACITY (L), 7 LITERS; MAX TEMPERATURE CELCIUS: 240 DEGREES; CONSTANT TEMPERATURE BATH MEETS ASTM REQUIREMENTS FOR PRECISE TEMPERATURE CONTROL. THE MICROPROCESSOR PID CONTROL OFFERS QUICK STABILIZATION WITHOUT OVERSHOOTING; OVERTEMPERATURE CUTOFF FURTHER PROTECTS BATH AND APPLICATION FROM EXCEEDING THE CUTOFF POINT; HEAVY-GAUGE STAINLESS STEEL BATH INTERIOR IS INSULATED; RECOMMENDED BATH FLUID IS WATER OR SILICONE HEAT TRANSFER FLUID; FOUR TUBE CAPACITY; DUAL DIGITAL DISPLAYS SHOW SETPOINT AND ACTUAL TEMPERATURE.; Part Name Assigned by Controlling Agency: SAYBOLT VISCOMETER BATH, 3 GAL (11.4 L); 115 VAC VAC; Material: STEEL CORROSION RESISTING. 2 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.