The Indicator,pressure, cataloged under National Stock Number 6685-01-658-3831, 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 20 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 20 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-658-3831 |
| Primary Part Number | 7383858-H7281505-12E-2MDO |
| Item Name | Indicator,pressure |
| 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 | MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P9290 SYSTEM CERTIFICATION PROCEDURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1622 OR MIL-STD-1330 AS DEEMED APPLICABLE; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICALS AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| 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 |
|---|---|
| 7383858-H7281505-12E-2MDO | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-H7281505-12A2MMDO | Naval Inventory Control Point Mechanicsburg (USA) |
| 504-7067931-12B-2DO | Naval Inventory Control Point Mechanicsburg (USA) |
| 504-7067931-12E-2DO | Naval Inventory Control Point Mechanicsburg (USA) |
| 7549828 PN 26DO | Naval Inventory Control Point Mechanicsburg (USA) |
| G7284701-026DO | Naval Inventory Control Point Mechanicsburg (USA) |
| H728-1505-12B-2DO | Naval Inventory Control Point Mechanicsburg (USA) |
| EA24-3PVF-LWAODO | Naval Inventory Control Point Mechanicsburg (USA) |
| G547-0002-G7284701-026DO | Naval Inventory Control Point Mechanicsburg (USA) |
| G728-4701 PN 26DO | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-H7281505-12A2MMDO | Naval Inventory Control Point Mechanicsburg (USA) |
| EA24-3PVF-LWZODO | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-H7281505-12E-2MDO | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-H7281505-12B-2MD0 | Naval Inventory Control Point Mechanicsburg (USA) |
| 7383858-H7281505-12A-2MD0 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-H7281505-12A-2MDO | Naval Inventory Control Point Mechanicsburg (USA) |
| 7550478-G7284701-026DO | Naval Inventory Control Point Mechanicsburg (USA) |
| G27-351P/N EA24-3PVF-LWD0 | Naval Inventory Control Point Mechanicsburg (USA) |
| H547-0001-H7281505-12B-2MDO | Naval Inventory Control Point Mechanicsburg (USA) |
| H728-1505-12E-2DO | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 504-7067931-12E-2 | 5/1 Secondary reference Naval Sea Systems Command |
| 7549828 PN 26 | 5/1 Secondary reference Naval Sea Systems Command |
| H728-1505-12E-2 | 5/1 Secondary reference U.S. Government activity |
| EA24-3PVF-LWZO | 5/1 Secondary reference Ashcroft Inc Dba Heise |
| 7383858-H7281505-12A2MM | 5/9 Secondary reference Naval Sea Systems Command |
| 7383858-H7281505-12B-2M | 5/9 Secondary reference U.S. Government activity |
| H728-1505-12B-2 | 5/1 Secondary reference U.S. Government activity |
| H547-0001-H7281505-12A2MM | 5/9 Secondary reference Naval Sea Systems Command |
| H547-0001-H7281505-12E-2M | 5/1 Secondary reference U.S. Government activity |
| G547-0002-G7284701-026 | 5/1 Secondary reference U.S. Government activity |
| EA24-3PVF-LWZO | 5/9 Secondary reference Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc |
| 7550478-G7284701-026 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 7383858-H7281505-12B-2M | 5/1 Secondary reference Naval Sea Systems Command |
| 504-7067931-12B-2 | 5/9 Secondary reference Naval Sea Systems Command |
| G27-351P/N EA24-3PVF-LW | 5/1 Secondary reference Ashcroft Inc Dba Heise |
| G728-4701 PN 26 | 5/1 Secondary reference U.S. Government activity |
| G7284701-026 | 5/1 Secondary reference U.S. Government activity |
| 7383858-H7281505-12E-2M | 5/1 Secondary reference Naval Sea Systems Command |
| H547-0001-H7281505-12B-2M | 5/1 Secondary reference U.S. Government activity |
| EA24-3PVF-LWAO | 5/1 Secondary reference Ashcroft Inc Dba Heise |
NSN 6685-01-658-3831 is a Indicator,pressure, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-658-3831 has 20 manufacturer part numbers on file: 7383858-H7281505-12E-2MDO (Naval Inventory Control Point Mechanicsburg), H547-0001-H7281505-12A2MMDO (Naval Inventory Control Point Mechanicsburg), 504-7067931-12B-2DO (Naval Inventory Control Point Mechanicsburg), 504-7067931-12E-2DO (Naval Inventory Control Point Mechanicsburg), 7549828 PN 26DO (Naval Inventory Control Point Mechanicsburg) and 15 more.
1 possible match (shared part number, not a government interchangeability claim): 6685-01-673-3218. Verify interchangeability with system specifications before substitution.
Key specifications for 7383858-H7281505-12E-2MDO: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL CONTROLLED IAW SS800-AG-MAN-010/P9290 SYSTEM CERTIFICATION PROCEDURES AND CRITERIA MANUAL FOR DEEP SUBMERGENCE SYSTEMS AND REQUIRES CLEANING, PACKING, AND MARKING IAW MIL-STD-1622 OR MIL-STD-1330 AS DEEMED APPLICABLE; CRITICAL ITEM FOR SAFETY AND SURVIVAL OF DEEP SUBMERGENCE RESEARCH AND RESCUE VEHICALS AS DIFFERENTIATED BY SPECIAL TEST FEATURES. 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.