The Regulator,pressure,medical Gas a, cataloged under National Stock Number 6680-01-689-9003, is classified within Federal Supply Class 6680 (Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Harris Welding and Machine Company. Government technical data includes 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6680-01-689-9003 |
| Primary Part Number | 425-125-540 |
| Item Name | Regulator,pressure,medical Gas a |
| FSC / FSG | 6680 / 66 — Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments |
| Manufacturer | Harris Welding and Machine Company |
| Status | ACTIVE |
| Stage Type | SINGLE |
| Gas for Which Designed | OXYGEN |
| Cylinder Pressure Gage | INCLUDED |
| Material | COPPER ALLOY BODY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5KZ43 | W.w. Grainger, Inc. Div Government Sales Division (USA) |
| 425-125-540 PRIMARY | Harris Welding and Machine Company (USA) |
| Reference | Meaning |
|---|---|
| 1574320 | 5/1 Secondary reference U.S. Government activity |
| 6680NCM206322 | 5/1 Secondary reference Defense Medical Standardization Board |
NSN 6680-01-689-9003 is a Regulator,pressure,medical Gas a, manufactured by Harris Welding and Machine Company, classified under FSC 6680, Liquid and Gas Flow, Liquid Level, and Mechanical Motion Measuring Instruments. Status: active.
NSN 6680-01-689-9003 has 2 manufacturer part numbers on file: 5KZ43 (W.w. Grainger, Inc. Div Government Sales Division), 425-125-540 (Harris Welding and Machine Company).
Key specifications for 425-125-540: Stage Type: SINGLE; Gas for Which Designed: OXYGEN; Special Features: GAS REGULATOR, REGULATOR SUPPLY TYPE: CYLINDER, GAS SERVICE: OXYGEN, STAGES, SINGLE STAGE; INLET CONNECTION CGA-540; OUTLET CONNECTION 9/16"-18 RH;D ELIVERY PRESSURE RANGE 0 TO 125 PSI; GAUGE SIZE 2 1/2", SUPPLY PRESSURE GAGE 4000PSI; MAX INTEL PRESSURE 3000 PSI; BODY MATERIAL BRASS; BODY DIA. 2.75"; STANDARDS: UL LISTED, CGA E-4; REGULATOR APPLICATION: GENERAL PURPOSE.; Cylinder Pressure Gage: INCLUDED. 4 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.