The Head,fluid Filter, cataloged under National Stock Number 2940-01-498-0839, 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 Perma Industries, Inc. Dba Perma-Cool. Government technical data includes 16 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2940-01-498-0839 |
| Primary Part Number | 181 |
| Item Name | Head,fluid Filter |
| FSC / FSG | 2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft |
| Manufacturer | Perma Industries, Inc. Dba Perma-Cool |
| Status | ACTIVE |
| Inlet Port Type | THREADED FEMALE, PLAIN |
| Overall Diameter | 3.000 INCHES NOMINAL IN |
| Inlet Nominal Thread Size | 0.375 INCHES IN |
| Outlet Port Type | THREADED FEMALE, PLAIN |
| Outlet Thread Direction | RIGHT-HAND |
| Quantity | 1 |
| Outlet Thread Series Designator | NPT |
| Mounting Bolt Hole | PROVIDED |
| Thread Direction | RIGHT-HAND INLET |
| Valve | NOT INCLUDED |
| Bolt Circle Diameter | 0.750 INCHES NOMINAL IN |
| Inlet Thread Series Designator | NPT |
| Filter Element | NOT INCLUDED |
| Material | ALUMINUM ALLOY AND STEEL |
| Hole Diameter | 0.750 INCHES NOMINAL IN |
| Outlet Nominal Thread Size | 0.375 INCHES IN |
| 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 |
|---|---|
| 12367110-4 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 181 PRIMARY | Perma Industries, Inc. Dba Perma-Cool (USA) |
| 12367110 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
NSN 2940-01-498-0839 is a Head,fluid Filter, manufactured by Perma Industries, Inc. Dba Perma-Cool, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
NSN 2940-01-498-0839 has 3 manufacturer part numbers on file: 12367110-4 (U S Army Tank Automotive Command Amsta-Im-Mm), 181 (Perma Industries, Inc. Dba Perma-Cool), 12367110 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 181: Overall Height: 1.450 INCHES NOMINAL IN; Inlet Port Type: THREADED FEMALE, PLAIN; Overall Diameter: 3.000 INCHES NOMINAL IN; Inlet Nominal Thread Size: 0.375 INCHES IN. 16 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.