The Gage,pressure,dial Indicating, cataloged under National Stock Number 6620-01-151-9175, is classified within Federal Supply Class 6620 (Engine Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6620-01-151-9175 |
| Primary Part Number | 4W509 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6620 / 66 — Engine Instruments |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Scale Name | OIL PRESSURE |
| Overall Diameter | 2.620 INCHES NOMINAL IN |
| Scale Smallest Increment | 50.0 POUNDS PER SQUARE INCH (PSI) LBS |
| Scale Range | +0.0 TO 350.0 POUNDS PER SQUARE INCH LBS |
| Pointer Type | INDICATING |
| Scale Type | SINGLE |
| Dial Size | 3.120 IN. DIA IN |
| Graduation Unit | 100.0 POUNDS PER SQUARE INCH LBS |
| 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 |
|---|---|
| 4W509 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 5N1748 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
NSN 6620-01-151-9175 is a Gage,pressure,dial Indicating, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 6620, Engine Instruments. Status: active.
NSN 6620-01-151-9175 has 1 manufacturer part number on file: 4W509 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4W509: Scale Name: OIL PRESSURE; Overall Diameter: 2.620 INCHES NOMINAL IN; Scale Smallest Increment: 50.0 POUNDS PER SQUARE INCH (PSI) LBS; Scale Range: +0.0 TO 350.0 POUNDS PER SQUARE INCH LBS. 8 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.