The Purging System,dry Nitrogen, cataloged under National Stock Number 4940-01-577-1305, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Precision Numerical Technologies, Inc.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4940-01-577-1305 |
| Primary Part Number | 3574AS220-1 |
| Item Name | Purging System,dry Nitrogen |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Precision Numerical Technologies, Inc. |
| Status | ACTIVE |
| First End Thread Series/type Designator | NPT |
| Operating Pressure | 10.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS |
| First End Connection Type | THREADED EXTERNAL GAS CYLINDER |
| Gas Type | NITROGEN |
| 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 |
|---|---|
| 3574AS220-1 PRIMARY | Precision Numerical Technologies, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 3574AS220-1 | 5/9 Secondary reference U.S. Government activity |
NSN 4940-01-577-1305 is a Purging System,dry Nitrogen, manufactured by Precision Numerical Technologies, Inc., classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-577-1305 has 1 manufacturer part number on file: 3574AS220-1 (Precision Numerical Technologies, Inc.).
Key specifications for 3574AS220-1: First End Thread Series/type Designator: NPT; Operating Pressure: 10.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS; First End Connection Type: THREADED EXTERNAL GAS CYLINDER; Special Features: NITROGEN SOURCE SHOULD BE OIL FREE, TYPE 1, CLASS 1, GRADE B OF FED SPEC BB-N-411. 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.