The Filter,air, cataloged under National Stock Number 4330-01-031-1816, is classified within Federal Supply Class 4330 (Centrifugals, Separators, and Pressure and Vacuum Filters) of the Pumps and Compressors group. The manufacturer of record is Obbagy, John E Dba Columbus Industrial Supply. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-031-1816 |
| Primary Part Number | X201 1/2 NPT |
| Item Name | Filter,air |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Obbagy, John E Dba Columbus Industrial Supply |
| Status | ACTIVE |
| Special Test Features | TESTED IN ACCORDANCE W/NAVORD OD 42046 |
| Reference Number Differentiating Characteristics | AS DIFFERENTIATED BY SPECIAL TEST FEATURES |
| 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 |
|---|---|
| X201 1/2 NPT | Obbagy, John E Dba Columbus Industrial Supply (USA) |
| Reference | Meaning |
|---|---|
| X201-1-2NPT | 3/9 Design control — primary reference Air-Mite Devices Inc |
| X201 1/2 NPT | 5/9 Secondary reference Columbus Service Supply Corp |
NSN 4330-01-031-1816 is a Filter,air, manufactured by Obbagy, John E Dba Columbus Industrial Supply, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-031-1816 has 1 manufacturer part number on file: X201 1/2 NPT (Obbagy, John E Dba Columbus Industrial Supply).
Key specifications for X201 1/2 NPT: Special Test Features: TESTED IN ACCORDANCE W/NAVORD OD 42046; Reference Number Differentiating Characteristics: AS DIFFERENTIATED BY SPECIAL TEST FEATURES. 2 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.