The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-673-0720, 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 1 manufacturer part number 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-01-673-0720 |
| Primary Part Number | 504-8200941 AY 90 ITEM NO 77CP |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 504-8200941 AY 90 ITEM NO 77CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| EA243PVPEBAO OXYGEN CLEAN | 3/1 Design control — primary reference Ashcroft Inc Dba Heise |
| 504-8200941 AY 90 ITEM NO 77 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| EA243PVPEBAO OXYGEN CLEAN | 5/1 Secondary reference Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc |
| EA243PVPEBAO OXYGEN CLEANCP | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
NSN 6685-01-673-0720 is a Gage,pressure,dial Indicating, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-673-0720 has 1 manufacturer part number on file: 504-8200941 AY 90 ITEM NO 77CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for 504-8200941 AY 90 ITEM NO 77CP: Criticality Code Justification: ZZZY; End Item Identification: GAGE BOARD ASSEMBLY; Reference Number Differentiating Characteristics: CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D. 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.