The Gage,pressure,dial Indicating, cataloged under National Stock Number 6620-01-660-7873, is classified within Federal Supply Class 6620 (Engine Instruments) of the Instruments and Laboratory Equipment group. The manufacturer of record is Ashcroft Inc Dba Heise. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6620-01-660-7873 |
| Primary Part Number | 20W-1001TH-01B-XFF-100 |
| Item Name | Gage,pressure,dial Indicating |
| FSC / FSG | 6620 / 66 — Engine Instruments |
| Manufacturer | Ashcroft Inc Dba Heise |
| Status | ACTIVE |
| Scale Name | POUNDS PRESSURE |
| Overall Diameter | 2.950 INCHES NOMINAL IN |
| Actuation Type | BOURDON TUBE |
| Mounting Method | U-CLAMP |
| Mounting Hole Diameter | 2.094 INCHES MINIMUM AND 2.219 INCHES MAXIMUM IN |
| Pointer Type | INDICATING |
| Scale Type | DIAL |
| Pointer Color | BLACK |
| Material | STEEL CASE |
| Material | BRONZE ACTUATING ELEMENT |
| 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 |
|---|---|
| 20W-1001TH-01B-XFF-100 PRIMARY | Ashcroft Inc Dba Heise (USA) |
| Reference | Meaning |
|---|---|
| PSI-20W-1001TH-01B-XFF-100 | 5/9 Secondary reference Ashcroft Inc Dba Heise |
NSN 6620-01-660-7873 is a Gage,pressure,dial Indicating, manufactured by Ashcroft Inc Dba Heise, classified under FSC 6620, Engine Instruments. Status: active.
NSN 6620-01-660-7873 has 1 manufacturer part number on file: 20W-1001TH-01B-XFF-100 (Ashcroft Inc Dba Heise).
Key specifications for 20W-1001TH-01B-XFF-100: Scale Name: POUNDS PRESSURE; Overall Diameter: 2.950 INCHES NOMINAL IN; Actuation Type: BOURDON TUBE; Mounting Method: U-CLAMP. 10 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.