The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-00-899-1860, 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 Bellofram Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6685-00-899-1860 |
| Primary Part Number | 2-5DP1-4LM2000 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Bellofram Corporation |
| Status | ACTIVE |
| Scale Accuracy | 2 PCT RATING FULL SCALE |
| Scale Name | PRESSURE |
| Overall Diameter | 2.187 INCHES NOMINAL IN |
| Actuation Type | SINGLE BOURDON TUBE |
| Mounting Connection Location | BOTTOM |
| Mounting Method | RIGID STEM |
| Scale Inscription/background Color | BLACK FIGURES ON WHITE BACKGROUND |
| Scale Smallest Increment | 25.0 POUNDS LBS |
| Connection Type | EXTERNAL |
| Scale Range | +0.000 TO 2000.000 POUNDS PRESSURE PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Adjustability | ADJUSTABLE |
| Scale Type | SINGLE |
| Connector Type Vent | NOT PROVIDED |
| Dial Size | 2 IN. DIA IN |
| Graduation Unit | 200.0 POUNDS LBS |
| Connection Location | LOWER |
| Pointer Color | BLACK |
| Surface Treatment | ENAMEL CASE |
| Material | STEEL ALLOY ACTUATING ELEMENT |
| Material | STEEL CASE |
| Material | GLASS PROTECTIVE CRYSTAL |
| Connection Quantity | 1 |
| Bezel Type | SNAP-ON |
| Connection Size | 0.250 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 |
|---|---|
| 2-5DP1-4LM2000 PRIMARY | Bellofram Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2-5DP1-4LM2000 | 3/9 Design control — primary reference Desco Corp Marsh Bellofram Div |
| 821900-1 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 6685-00-899-1860 is a Gage,pressure,dial Indicating, manufactured by Bellofram Corporation, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-00-899-1860 has 1 manufacturer part number on file: 2-5DP1-4LM2000 (Bellofram Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6120-01-140-6104. Verify interchangeability with system specifications before substitution.
Key specifications for 2-5DP1-4LM2000: Scale Accuracy: 2 PCT RATING FULL SCALE; Scale Name: PRESSURE; Overall Diameter: 2.187 INCHES NOMINAL IN; Actuation Type: SINGLE 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.