The Thermowell, cataloged under National Stock Number 6685-01-260-4307, 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 Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-260-4307 |
| Primary Part Number | DGR4350C PT79AVM |
| Item Name | Thermowell |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Material | STEEL AND COPPER ALLOY |
| Reference Number Differentiating Characteristics | MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION |
| 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 |
|---|---|
| DGR4350C PT79AVM | Naval Inventory Control Point Mechanicsburg (USA) |
| MS325HHVM | Naval Inventory Control Point Mechanicsburg (USA) |
| DGR4350B PT79AVM | Naval Inventory Control Point Mechanicsburg (USA) |
| DGR4317B PT1VM | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| DGR4350C PT79A | 5/1 Secondary reference Siemens Energy, Inc. |
| DGR4317B PT1 | 5/1 Secondary reference Siemens Energy, Inc. |
| MS325HH | 3/1 Design control — primary reference Siemens Energy, Inc. |
| DGR4350B PT79A | 5/1 Secondary reference Siemens Energy, Inc. |
NSN 6685-01-260-4307 is a Thermowell, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-260-4307 has 4 manufacturer part numbers on file: DGR4350C PT79AVM (Naval Inventory Control Point Mechanicsburg), MS325HHVM (Naval Inventory Control Point Mechanicsburg), DGR4350B PT79AVM (Naval Inventory Control Point Mechanicsburg), DGR4317B PT1VM (Naval Inventory Control Point Mechanicsburg).
Key specifications for DGR4350C PT79AVM: Special Features: REMOVABLE BRASS CUP AFFIXED W/CHAIN:NOT PROVIDED;; Material: STEEL AND COPPER ALLOY; Reference Number Differentiating Characteristics: MAGNETIC PERMEABILITY SHALL NOT EXCEED 2.0 AFTER FABRICATION. 2 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.