The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-686-3977, 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 Donaldson. Government technical data includes 22 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-686-3977 |
| Primary Part Number | P532728 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Donaldson |
| Status | ACTIVE |
| Mounting Hole Quantity | 1 |
| Scale Accuracy | PLUS OR MINUS 3 PERCENT |
| Scale Name | ABSOLUTE PRESSURE |
| Actuation Type | BOURDON TUBE |
| Mounting Connection Location | BOTTOM |
| Mounting Method | EXTERNAL THREAD |
| Connection Type | EXTERNAL |
| Scale Range | +0.0 TO 350.0 BAR |
| Material Document and Classification | 304 ASSN STD SINGLE MATERIAL RESPONSE CASE |
| Material Document and Classification | 304 ASSN STD SINGLE MATERIAL RESPONSE ACTUATING ELEMENT |
| Scale Name for Which Pointer Is Designed | ABSOLUTE PRESSURE |
| Pointer Type | INDICATING |
| Adjustability | NONADJUSTABLE |
| Scale Type | CONCENTRIC |
| Connector Type Vent | PROVIDED |
| Connection Location | BOTTOM |
| Pointer Color | BLACK |
| Material | PLASTIC ACRYLIC PROTECTIVE CRYSTAL |
| Material | STEEL COMP 304 CASE |
| Material | STEEL COMP 304 ACTUATING ELEMENT |
| Connection Quantity | 1 |
| Connection Size | .25 INCH NPT 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 |
|---|---|
| P532728 | Donaldson (FRA) |
| Reference | Meaning |
|---|---|
| P562725 | 3/9 Design control — primary reference Lha Products Inc Sub of Lucas Industries of North America |
NSN 6685-01-686-3977 is a Gage,pressure,dial Indicating, manufactured by Donaldson, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-686-3977 has 1 manufacturer part number on file: P532728 (Donaldson).
Key specifications for P532728: Mounting Hole Quantity: 1; Overall Height: 3.71 INCHES NOMINAL IN; Scale Accuracy: PLUS OR MINUS 3 PERCENT; Scale Name: ABSOLUTE PRESSURE. 22 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.