The Filter,fluid, cataloged under National Stock Number 2940-01-497-5039, is classified within Federal Supply Class 2940 (Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Norman Filter Company, L.l.c. Dba Norman Filter Co Llc. Government technical data includes 22 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2940-01-497-5039 |
| Primary Part Number | 4525AC-U-345-LRF-DR2 |
| Item Name | Filter,fluid |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Norman Filter Company, L.l.c. Dba Norman Filter Co Llc |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Filtration Rating in Microns | 0.6 ABSOLUTE |
| Distance Between Mounting Hole Centers | 2.000 INCHES NOMINAL IN |
| First Intake Nominal Thread Size | 0.750 INCHES IN |
| Drop Pressure | ERR-060 |
| First Intake Thread Series Designator | NPT |
| Design Type | REUSABLE |
| Body Outside Diameter | 3.750 INCHES NOMINAL IN |
| Temp Rating | -40.0 FAHRENHEIT MINIMUM AND 250.0 FAHRENHEIT MAXIMUM DEGF |
| First Intake Thread Direction | RIGHT-HAND |
| Body Height | 7.850 INCHES NOMINAL IN |
| First Intake Connection Type | THREADED INTERNAL PIPE HEAD |
| Style Designator | HIGH PRESSURE THREADED BODY |
| Mounting Hole Diameter | 0.345 INCHES NOMINAL IN |
| Operating Pressure | 5000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS |
| Filtering Element Quantity | 1 |
| Filtering System for Which Designed | FULL FLOW |
| First Discharge Connection Relationship to Intake Connection | IDENTICAL TO FIRST INTAKE CONNECTION |
| Media for Which Designed | GAS |
| Material | ALUMINUM ALLOY 2024 BODY |
| Mounting Type | UNTHREADED HOLE TOP SIDE |
| 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 |
|---|---|
| 4525AC-U-345-LRF-DR2 PRIMARY | Norman Filter Company, L.l.c. Dba Norman Filter Co Llc (USA) |
NSN 2940-01-497-5039 is a Filter,fluid, manufactured by Norman Filter Company, L.l.c. Dba Norman Filter Co Llc, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-01-497-5039 has 1 manufacturer part number on file: 4525AC-U-345-LRF-DR2 (Norman Filter Company, L.l.c. Dba Norman Filter Co Llc).
Key specifications for 4525AC-U-345-LRF-DR2: Mounting Hole Quantity: 2; Filtration Rating in Microns: 0.6 ABSOLUTE; Distance Between Mounting Hole Centers: 2.000 INCHES NOMINAL IN; First Intake Nominal Thread Size: 0.750 INCHES IN. 22 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.