The Filter Element,fluid, cataloged under National Stock Number 4330-01-221-7443, 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 Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division. 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-221-7443 |
| Primary Part Number | K4U-A267AT |
| Item Name | Filter Element,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division |
| Status | ACTIVE |
| Filtering Media Design | MESH SINGLE FILTERING MEDIA RESPONSE |
| Material | COPPER ALLOY FILTERING MEDIUM |
| 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 |
|---|---|
| K4U-A267AT PRIMARY | Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division (USA) |
| Reference | Meaning |
|---|---|
| K4U-61AT | 5/9 Secondary reference Ingersoll-Rand Co Professional Tools Group |
| K4U-61AT | 5/9 Secondary reference Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division |
| K4U-61AT | 3/9 Design control — primary reference Ingersoll-Rand Co Power Tool Div |
| K4U-61AT | C/1 Advisory reference — outside the item-of-supply concept Ingersoll Rand Co |
NSN 4330-01-221-7443 is a Filter Element,fluid, manufactured by Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-221-7443 has 1 manufacturer part number on file: K4U-A267AT (Ingersoll-Rand Company Dba Ingersoll-Rand Div Tool & Hoist Division).
Key specifications for K4U-A267AT: Filtering Media Design: MESH SINGLE FILTERING MEDIA RESPONSE; Material: COPPER ALLOY FILTERING MEDIUM. 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.