The Gas Calibration, cataloged under National Stock Number 6685-01-623-4171, 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 Huntington Ingalls Inc Div Newport News Shipbuilding. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6685-01-623-4171 |
| Primary Part Number | 401-8334327 ITEM NO 22 |
| Item Name | Gas Calibration |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| 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 |
|---|---|
| 401-8334327 ITEM NO 22 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| NNS-S02-5.5 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| 58L-175-5.5 | 3/9 Design control — primary reference Gasco Affiliates, L.l.c. |
NSN 6685-01-623-4171 is a Gas Calibration, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-623-4171 has 2 manufacturer part numbers on file: 401-8334327 ITEM NO 22 (Huntington Ingalls Inc Div Newport News Shipbuilding), NNS-S02-5.5 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 401-8334327 ITEM NO 22: Special Features: DESCRIPTION: GAS CYLINDER 5.5% SULFUR DIOXIDE; DWG IS ARMS EXPORT CONTROLLED; Part Name Assigned by Controlling Agency: (INAVY) GAS CALIBRATION; End Item Identification: UPDATE. 0 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.