The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-303-9523, 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 H O Trerice Co. Government technical data includes 7 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-01-303-9523 |
| Primary Part Number | 800B2002BA120 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | H O Trerice Co |
| Status | ACTIVE |
| Overall Diameter | 2.250 INCHES NOMINAL IN |
| Scale Inscription/background Color | WHITE MARKINGS ON BLACK BACKGROUND |
| Scale Range | +0.0 TO 160.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Dial Size | 2 IN. DIA IN |
| Connection Location | BACK |
| Material | GLASS PROTECTIVE CRYSTAL |
| Connection Size | 0.438 IN. NPT DIA IN |
| 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 |
|---|---|
| 800B2002BA120 PRIMARY | H O Trerice Co (USA) |
| Reference | Meaning |
|---|---|
| 8720800 | D/9 Drawing number reference only U.S. Government activity |
| 800B20FSL250PSI120 | 5/9 Secondary reference H O Trerice Co |
| 127-866 | 5/9 Secondary reference H O Trerice Co |
| 800B | 5/9 Secondary reference H O Trerice Co |
| 800B2002LA120 | 5/9 Secondary reference H O Trerice Co |
NSN 6685-01-303-9523 is a Gage,pressure,dial Indicating, manufactured by H O Trerice Co, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-303-9523 has 1 manufacturer part number on file: 800B2002BA120 (H O Trerice Co).
1 possible match (shared part number, not a government interchangeability claim): 6685-01-440-1829. Verify interchangeability with system specifications before substitution.
Key specifications for 800B2002BA120: Overall Diameter: 2.250 INCHES NOMINAL IN; Scale Inscription/background Color: WHITE MARKINGS ON BLACK BACKGROUND; Scale Range: +0.0 TO 160.0 POUNDS PRESSURE PER SQUARE INCH LBS; Dial Size: 2 IN. DIA IN. 7 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.