The Thermowell, cataloged under National Stock Number 6685-01-271-9767, is classified within Federal Supply Class 6685 (Pressure, Temperature, and Humidity Measuring and Controlling Instruments) of the Instruments and Laboratory Equipment group. Government technical data includes 6 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-271-9767 |
| Item Name | Thermowell |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Status | ACTIVE |
| Criticality Code Justification | ZZZW |
| Material Document and Classification | QQ-S-763, CLASS 321 FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-763, CLASS 347 FED SPEC 2ND MATERIAL RESPONSE |
| Departure From Cited Document | QUALITY CONTROLLED IAW NAVSUP CONTROL INSTRUCTION FOR SURFACE LEVEL ITEMS |
| Bulb Tip Outside Diameter | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Bulb Tip Length | 5.500 INCHES NOMINAL IN |
| Material | STEEL COMP 321 OR STEEL COMP 347 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Reference | Meaning |
|---|---|
| SAE-AMS-QQ-S-763,CL 321,247 ONLY | 5/2 Secondary reference U.S. Government activity |
| SAEAMSQQS763,CL 321,247ONLYS1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MIL-T-24270/7 | 4/1 Identification reference U.S. Government activity |
| MIL-T-24270/7S1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 6685-01-271-9767 is a Thermowell, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
Key specifications for 6685-01-271-9767: Criticality Code Justification: ZZZW; Material Document and Classification: QQ-S-763, CLASS 321 FED SPEC 1ST MATERIAL RESPONSE AND QQ-S-763, CLASS 347 FED SPEC 2ND MATERIAL RESPONSE; Overall Length: 7.219 INCHES NOMINAL IN; Departure From Cited Document: QUALITY CONTROLLED IAW NAVSUP CONTROL INSTRUCTION FOR SURFACE LEVEL ITEMS. 6 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.