The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-522-7761, 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 Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6685-01-522-7761 |
| Primary Part Number | EA28-3CJX-RWBO-G12-205-5 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc |
| Status | ACTIVE |
| Scale Name | PRESSURE-VACUUM |
| Actuation Type | BOURDON TUBE |
| Scale Smallest Increment | 5.0 POUNDS PER SQUARE INCH (PSI) AND 10.0 INCHES LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES HG AND +0.0 TO 800.0 POUNDS PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 8-1/2IN IN |
| Graduation Unit | 100.0 POUNDS PER SQUARE INCH LBS |
| Connection Location | BACK |
| Pointer Color | ANY ACCEPTABLE |
| Material | NICKEL ALLOY ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Connection Size | 7/16-20 UNF |
| 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 |
|---|---|
| EA28-3CJX-RWBO-G12-205-5 PRIMARY | Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc (USA) |
| Reference | Meaning |
|---|---|
| EA28-3CJX-RWBO | 5/9 Secondary reference Ashcroft Inc Dba Heise |
| SC8MC8HCWBANAG | 5/9 Secondary reference U.S. Government activity |
| MIL-G-18997E | 5/9 Secondary reference U.S. Government activity |
| EA28-3CJX-RWB0 | 5/9 Secondary reference Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc |
NSN 6685-01-522-7761 is a Gage,pressure,dial Indicating, manufactured by Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-522-7761 has 1 manufacturer part number on file: EA28-3CJX-RWBO-G12-205-5 (Mmc Metrology Lab, Inc. Dba Mmc Metrology Lab Inc).
Key specifications for EA28-3CJX-RWBO-G12-205-5: Scale Name: PRESSURE-VACUUM; Actuation Type: BOURDON TUBE; Scale Smallest Increment: 5.0 POUNDS PER SQUARE INCH (PSI) AND 10.0 INCHES LBS; Connection Type: EXTERNAL. 16 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.