The Filter,fluid, cataloged under National Stock Number 4330-01-335-0420, 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 29 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4330-01-335-0420 |
| Primary Part Number | LRT-18LS7-S-S-N-MS |
| Item Name | Filter,fluid |
| FSC / FSG | 4330 / 43 — Centrifugals, Separators, and Pressure and Vacuum Filters |
| Manufacturer | Schroeder Industries Llc |
| Status | ACTIVE |
| Filtering Media Design | PLEATED SINGLE FILTERING MEDIA RESPONSE |
| First Discharge Connection Type | INTERNAL SOLDER BOTTOM |
| Mounting Hole Quantity | 4 |
| Filtration Rating in Microns | 7.0 NOMINAL |
| Distance Between Mounting Hole Centers | 6.250 INCHES NOMINAL IN |
| First Intake Nominal Thread Size | 1.875 INCHES IN |
| First Intake Thread Series Designator | UN |
| Design Type | REUSABLE |
| Body Outside Diameter | 7.000 INCHES NOMINAL IN |
| First Discharge Nominal Inside Diameter | 2.250 INCHES IN |
| First Intake Thread Direction | RIGHT-HAND |
| Body Height | 22.900 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL TUBE HEAD SIDE |
| First Intake Thread Class | 3B |
| Style Designator | HIGH PRESSURE THREADED BODY |
| Mounting Hole Diameter | 0.440 INCHES NOMINAL IN |
| Operating Pressure | 400.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Features Provided | DIFFERENTIAL PRESSURE INDICATOR |
| Filtering Element Quantity | 1 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | NOT IDENTICAL |
| Media for Which Designed | FUEL/OIL, HYDROCARBON |
| Material | RUBBER BUNA N SEAL |
| Material | STEEL CONTAINER/CARTRIDGE |
| Material | ALUMINUM BODY |
| Material | FIBER SYNTHETIC FILTERING MEDIUM |
| First Intake Thread Quantity Per Inch | 12 |
| Mounting Type | UNTHREADED HOLE HEAD |
| Second Intake Connection Relationship to First Intake Connection | 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-S-S-MS | Schroeder Industries Llc (USA) |
| LRT-18LS7-S-S-N-MS PRIMARY | Schroeder Industries Llc (USA) |
NSN 4330-01-335-0420 is a Filter,fluid, manufactured by Schroeder Industries Llc, classified under FSC 4330, Centrifugals, Separators, and Pressure and Vacuum Filters. Status: active.
NSN 4330-01-335-0420 has 2 manufacturer part numbers on file: LRT-18LS7-S-S-MS (Schroeder Industries Llc), LRT-18LS7-S-S-N-MS (Schroeder Industries Llc).
Key specifications for LRT-18LS7-S-S-N-MS: Filtering Media Design: PLEATED SINGLE FILTERING MEDIA RESPONSE; First Discharge Connection Type: INTERNAL SOLDER BOTTOM; Mounting Hole Quantity: 4; Filtration Rating in Microns: 7.0 NOMINAL. 29 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.