The Thermocouple,immersion, cataloged under National Stock Number 6685-00-445-8256, 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 Alnor Instrument Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-445-8256 |
| Primary Part Number | 1033 |
| Item Name | Thermocouple,immersion |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Alnor Instrument Company |
| Status | ACTIVE |
| Mounting Facility Type and Quantity | 1 EXTERNAL THREAD |
| Mounting Facility Screw Thread Series Designator | NPT |
| Accommodated Wire Awg Size | 14 |
| Mounting Thread Quantity | 14 PER INCH |
| Immersion Length | 3.500 INCHES NOMINAL IN |
| Mounting Facility Nominal Screw Thread Diameter | 0.500 INCHES IN |
| Unit Type | PROTECTIVE TUBE |
| Operating Temp Range | +0.0 TO 1200.0 FAHRENHEIT DEGF |
| Material | FIBERGLASS INDIVIDUAL WIRE INSULATION |
| Terminal Type and Quantity | 2 SCREW |
| 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 |
|---|---|
| 1033 PRIMARY | Alnor Instrument Company (USA) |
| Reference | Meaning |
|---|---|
| JHP133-710 | 5/9 Secondary reference Hollingsworth John R Co |
| T-1421 | 5/2 Secondary reference U.S. Government activity |
| P10369 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
| P210369 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
| NP8142PC4 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
NSN 6685-00-445-8256 is a Thermocouple,immersion, manufactured by Alnor Instrument Company, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-445-8256 has 1 manufacturer part number on file: 1033 (Alnor Instrument Company).
Key specifications for 1033: Mounting Facility Type and Quantity: 1 EXTERNAL THREAD; Mounting Facility Screw Thread Series Designator: NPT; Overall Length: 9.531 INCHES NOMINAL IN; Accommodated Wire Awg Size: 14. 10 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.