The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-134-4980, 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 Ametek, Inc. Div Aerospace & Defense. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-134-4980 |
| Primary Part Number | 132021 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Ametek, Inc. Div Aerospace & Defense |
| Status | ACTIVE |
| Mounting Hole Quantity | 3 |
| Scale Accuracy | 0.5 PCT PORM |
| Scale Name | PRESSURE-VACUUM |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | REAR EDGE |
| Mounting Method | PANEL FLANGE |
| Scale Inscription/background Color | BLACK MARKINGS ON WHITE BACKGROUND |
| Scale Smallest Increment | 2.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 200.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Mounting Hole Diameter | 0.219 INCHES NOMINAL IN |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | CONCENTRIC DIAL |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 4-1/2 IN. DIA IN |
| Graduation Unit | 20.0 POUNDS PER SQUARE INCH LBS |
| Bolt Circle Diameter | 5.375 INCHES NOMINAL IN |
| Connection Location | LOWER FRONT |
| Pointer Color | BLACK |
| Material | PLASTIC ACRYLIC PROTECTIVE CRYSTAL |
| Material | BRASS ACTUATING ELEMENT |
| Material | ALUMINUM CASE |
| Connection Quantity | 1 |
| Connection Size | 0.500 IN. ANPT 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 |
|---|---|
| 1903-132021 | Ametek, Inc. Div Aerospace & Defense (USA) |
| 132021 PRIMARY | Ametek, Inc. Div Aerospace & Defense (USA) |
| Reference | Meaning |
|---|---|
| 2088292-1 | 5/2 Secondary reference U.S. Government activity |
NSN 6685-01-134-4980 is a Gage,pressure,dial Indicating, manufactured by Ametek, Inc. Div Aerospace & Defense, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-134-4980 has 2 manufacturer part numbers on file: 1903-132021 (Ametek, Inc. Div Aerospace & Defense), 132021 (Ametek, Inc. Div Aerospace & Defense).
2 possible matches (shared part number, not a government interchangeability claim): 6680-01-338-9928, 8440-01-710-8908. Verify interchangeability with system specifications before substitution.
Key specifications for 132021: Mounting Hole Quantity: 3; Scale Accuracy: 0.5 PCT PORM; Scale Name: PRESSURE-VACUUM; Actuation Type: BOURDON TUBE. 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.
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.