The Filter,fluid, cataloged under National Stock Number 4330-01-429-9638, 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 Schroeder Industries Llc. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-429-9638 |
| Primary Part Number | LRT-18LS7-F24-N-P2-C-Y2 |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| Filtration Rating in Microns | 7.0 NOMINAL |
| First Intake Nominal Thread Size | 1.500 INCHES IN |
| First Intake Thread Series Designator | NPTF |
| Design Type | REUSABLE |
| Second Intake Thread Series Designator | NPTF |
| Body Outside Diameter | 7.000 INCHES NOMINAL IN |
| First Intake Thread Direction | RIGHT-HAND |
| Second Intake Thread Direction | RIGHT-HAND |
| Body Height | 23.470 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL PIPE TOP SIDE |
| Style Designator | HIGH PRESSURE THREADED BODY |
| Filtering Element Quantity | 1 |
| Filtering System for Which Designed | FULL FLOW |
| Second Intake Connection Type | THREADED INTERNAL PIPE TOP SIDE |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| Second Intake Nominal Thread Size | 0.125 INCHES IN |
| Mounting Type | INLET CONNECTION AND OUTLET CONNECTION TOP SIDE |
| Second Intake Connection Relationship to First Intake Connection | NOT IDENTICAL |
| 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 |
|---|---|
| LRT-18LS7-F24-N-P2-C-Y2 PRIMARY | Schroeder Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| YMD-6777 | D/9 Drawing number reference only Appleton Marine Inc |
| D-5705 | D/9 Drawing number reference only Schroeder Industries Llc |
NSN 4330-01-429-9638 is a Filter,fluid, manufactured by Schroeder Industries Llc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-429-9638 has 1 manufacturer part number on file: LRT-18LS7-F24-N-P2-C-Y2 (Schroeder Industries Llc).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-433-4452. Verify interchangeability with system specifications before substitution.
Key specifications for LRT-18LS7-F24-N-P2-C-Y2: Filtration Rating in Microns: 7.0 NOMINAL; First Intake Nominal Thread Size: 1.500 INCHES IN; First Intake Thread Series Designator: NPTF; Design Type: REUSABLE. 18 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.