The Gage,pressure,dial Indicating, cataloged under National Stock Number 6685-01-359-8535, 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 Chase Supply, Inc. Dba Chase Defense Partners. Government technical data includes 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6685-01-359-8535 |
| Primary Part Number | 521433-4 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6685 / 66 — Pressure, Temperature, and Humidity Measuring and Controlling Instruments |
| Manufacturer | Chase Supply, Inc. Dba Chase Defense Partners |
| Status | ACTIVE |
| Overall Diameter | 6.000 INCHES NOMINAL IN |
| Scale Range | +0.0 TO 2000.0 POUNDS PRESSURE PER SQUARE INCH LBS |
| Dial Size | 4-1/2 IN. DIA IN |
| Connection Location | BOTTOM |
| 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 |
|---|---|
| 521433-4 | Chase Supply, Inc. Dba Chase Defense Partners (USA) |
| Reference | Meaning |
|---|---|
| 521433-4 | 5/9 Secondary reference 3d Instruments, Lp Dba Sierra Precision |
| 25544-32MF31MLG | 5/1 Secondary reference 3d Instruments Llc. Dba Sierra Precision |
| 25544-32MF31MLG | 5/9 Secondary reference 3d Instruments, Lp Dba Sierra Precision |
| 521433-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6685-01-359-8535 is a Gage,pressure,dial Indicating, manufactured by Chase Supply, Inc. Dba Chase Defense Partners, classified under FSC 6685, Pressure, Temperature, and Humidity Measuring and Controlling Instruments. Status: active.
NSN 6685-01-359-8535 has 1 manufacturer part number on file: 521433-4 (Chase Supply, Inc. Dba Chase Defense Partners).
Key specifications for 521433-4: Overall Diameter: 6.000 INCHES NOMINAL IN; Scale Range: +0.0 TO 2000.0 POUNDS PRESSURE PER SQUARE INCH LBS; Dial Size: 4-1/2 IN. DIA IN; Connection Location: BOTTOM. 4 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.