The Gage,differential,dial Indicatin, cataloged under National Stock Number 6685-00-256-6591, 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 Cameron Energy Services Corp.. Government technical data includes 25 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-00-256-6591 |
| Primary Part Number | 20WCXXXXXXXE5BBXXX02 |
| Item Name | Gage,differential,dial Indicatin |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Cameron Energy Services Corp. |
| Status | ACTIVE |
| Scale Accuracy | 1 PCT ENTIRE RANGE |
| Scale Name | DIFFERENTIAL PRESSURE |
| Overall Diameter | 5.594 INCHES NOMINAL IN |
| Actuation Type | BELLOWS |
| Mounting Method | BRACKET(S) AND PANEL |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Connection Type | INTERNAL |
| Scale Range | +0.0 TO 30.0 INCHES OF WATER IN |
| Material Document and Classification | AISI 316 ASSN STD SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Connection Location | BOTTOM AND TOP |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Unable to Decode | UNABLE TO DECODE |
| Material | GLASS PROTECTIVE CRYSTAL |
| Material | ALUMINUM CASE |
| Material | STEEL COMP 316 ACTUATING ELEMENT |
| Material | ALUMINUM LOCATION NOT OTHERWISE SPECIFIED |
| Connection Quantity | 4 |
| Bezel Type | ANY ACCEPTABLE |
| Connection Size | 0.438 IN. UNF DIA IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 20WCXXXXXXXE5BBXXX02 PRIMARY | Cameron Energy Services Corp. (USA) |
| Reference | Meaning |
|---|---|
| 20WCXXXXXXXXE5BBXXX02 | 5/9 Secondary reference Cameron Energy Services Corp. |
| 20JCXXXXXXXE5BBXXX01 | 5/9 Secondary reference Cameron Energy Services Corp. |
| 20JCXXXXXXXE5BBXXX03 | 5/9 Secondary reference Cameron Energy Services Corp. |
NSN 6685-00-256-6591 is a Gage,differential,dial Indicatin, manufactured by Cameron Energy Services Corp., classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-256-6591 has 1 manufacturer part number on file: 20WCXXXXXXXE5BBXXX02 (Cameron Energy Services Corp.).
Key specifications for 20WCXXXXXXXE5BBXXX02: Scale Accuracy: 1 PCT ENTIRE RANGE; Scale Name: DIFFERENTIAL PRESSURE; Overall Diameter: 5.594 INCHES NOMINAL IN; Actuation Type: BELLOWS. 25 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.
NSN 6685-00-256-6591 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.