NSN 2940-01-603-9554 · NIIN 016039554 · Part number 311C-M-621
The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C · FSC 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft · FSG 29 — Engine Accessories · CAGE 1QZK3
Government record, cited
NSN 2940-01-603-9554 — this item is cataloged by the U.S. Government under National Stock Number 2940-01-603-9554. Manufacturer of record part number: 311C-M-621.
Also searched as2940-01-603-9554 ·
2940016039554 ·
NIIN 016039554 ·
01-603-9554 ·
FSC 2940 Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft · CAGE 1QZK3 · 311C-M-621
Manufacturer of record: The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C
Identification
NSN: 2940-01-603-9554
NIIN: 016039554
FSC: 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
FSG: 29 — Engine Accessories
Primary part number: 311C-M-621
Manufacturer: The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C
General Description
The Nrp,strainer, cataloged under National Stock Number 2940-01-603-9554, 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 The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Catalog Facts
Item Name
Nrp,strainer
FSC / FSG
2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft (FSG 29)
Manufacturers
The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C (CAGE 1QZK3)
Technical Specifications
Parameter
Value
NSN
2940-01-603-9554
Primary Part Number
311C-M-621
Item Name
Nrp,strainer
FSC / FSG
2940 / 29 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
Manufacturer
The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C
The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C (USA)
No interchangeability data on file.
Other items in FSC 2940 — Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2940-00-001-1259
2940-00-001-1259 · Item name not on file
2940-00-001-3513
FILTER ELEMENT,INTAKE AIR CLEANE
2940-00-001-3513
FILTER ELEMENT,INTAKE AIR CLEANE
2940-00-001-3513
FILTER ELEMENT,INTAKE AIR CLEANE
2940-00-001-3513
FILTER ELEMENT,INTAKE AIR CLEANE
2940-00-001-3513
FILTER ELEMENT,INTAKE AIR CLEANE
2940-00-001-3988
2940-00-001-3988 · Item name not on file
2940-00-001-3991
2940-00-001-3991 · Item name not on file
Frequently Asked Questions
What is NSN 2940-01-603-9554?
NSN 2940-01-603-9554 is a Nrp,strainer, manufactured by The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C, classified under FSC 2940, Engine Air and Oil Filters, Strainers, and Cleaners, Nonaircraft. Status: active.
What part numbers are listed for NSN 2940-01-603-9554?
NSN 2940-01-603-9554 has 1 manufacturer part number on file: 311C-M-621 (The Hellan Strainer Co Div Sister Company of Cleveland Gear, Subs. of Industrial Mfg. C).
Is NSN 2940-01-603-9554 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.