NSN 2990-01-291-1277 — this item is cataloged by the U.S. Government under National Stock Number 2990-01-291-1277. Manufacturer of record part number: 6234AL.
General Characteristics Item Description: ALUMINUM; O-RING SEAT; 6.00 OZ CRACKING PRESSURE; 4000.00 CU FT AIR PER HOUR AT 1.000 PSIG VACUUM VENTING CAP. OZ
The Vent,inbreathing, cataloged under National Stock Number 2990-01-291-1277, is classified within Federal Supply Class 2990 (Miscellaneous Engine Accessories, Nonaircraft) of the Engine Accessories group. The manufacturer of record is Betts Industries, Inc.. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 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
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2990-00-001-1248 · Item name not on file
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2990-00-001-2055
2990-00-001-2055 · Item name not on file
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2990-00-001-3498 · Item name not on file
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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 2990-01-291-1277?
NSN 2990-01-291-1277 is a Vent,inbreathing, manufactured by Betts Industries, Inc., classified under FSC 2990, Miscellaneous Engine Accessories, Nonaircraft. Status: active.
What part numbers are listed for NSN 2990-01-291-1277?
NSN 2990-01-291-1277 has 2 manufacturer part numbers on file: 6234AL (Betts Industries, Inc.), 6234AL (Heil Co the Midwest Parts Center).
What are the specifications of 6234AL?
Key specifications for 6234AL: General Characteristics Item Description: ALUMINUM; O-RING SEAT; 6.00 OZ CRACKING PRESSURE; 4000.00 CU FT AIR PER HOUR AT 1.000 PSIG VACUUM VENTING CAP. OZ. 1 specification is documented in the U.S. Government catalog.
Is NSN 2990-01-291-1277 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.