NSN 2990-00-367-4392 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-367-4392. Manufacturer of record part number: 4B1443.
Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description
The Button, cataloged under National Stock Number 2990-00-367-4392, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 specification, 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.
Other items in FSC 2990 — Miscellaneous Engine Accessories, Nonaircraft
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
2990-00-001-0001
BLOWER ASSEMBLY
2990-00-001-1248
2990-00-001-1248 · Item name not on file
2990-00-001-1250
2990-00-001-1250 · Item name not on file
2990-00-001-2055
2990-00-001-2055 · Item name not on file
2990-00-001-3498
2990-00-001-3498 · Item name not on file
2990-00-001-3520
2990-00-001-3520 · Item name not on file
2990-00-001-3521
2990-00-001-3521 · Item name not on file
2990-00-001-3522
CAP ASSEMBLY,MUFFLE
Frequently Asked Questions
What is NSN 2990-00-367-4392?
NSN 2990-00-367-4392 is a Button, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
What part numbers are listed for NSN 2990-00-367-4392?
NSN 2990-00-367-4392 has 1 manufacturer part number on file: 4B1443 (Caterpillar Inc Div Caterpillar Defense).
What are the specifications of 4B1443?
Key specifications for 4B1443: General Characteristics Item Description: STEEL;0.570 IN. O/A LG;0.375 IN. BODY 0D;0.703 IN. FLANGE OD;0.281 IN. FLANGE THK IN. 1 specification is documented in the U.S. Government catalog.
Is NSN 2990-00-367-4392 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.