PartsTable
Technical Data Sheet
Download PDF

B1990C — CAP,FILLER OPENING

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

B1990C: CAP,FILLER OPENING.

The CAP,FILLER OPENING is a the manufacturer industrial component. Key specifications include material: STEEL BODY, overall_height: 1.523 INCHES NOMINAL IN, outside_diameter: 2.578 INCHES NOMINAL IN, style_designator: LOCKING TYPE VENTED, system_for_which_designed: NONPRESSURIZED. This part is cataloged in the U.S.

Government catalog under NSN 2590-00-256-2594, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
B1990C
NSN: 2590-00-256-2594
FSC: 2590 — Miscellaneous Vehicular Components
CAGE: 90005 — PUROLATOR FACET INC. DIV PARKER AEROSPACE FILTRATION DIVISION DBA PUROLATOR FACET, IN (USA)
SPECIFICATIONS
materialSTEEL BODY
overall_height1.523 INCHES NOMINAL IN
outside_diameter2.578 INCHES NOMINAL IN
style_designatorLOCKING TYPE VENTED
system_for_which_designedNONPRESSURIZED
NSN2590-00-256-2594
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CAP,FILLER OPENING TITLE COMPONENT PN B1990C MFR CAP,FILLER OPENING
KEY FEATURES
•
STYLE DESIGNATOR: LOCKING TYPE VENTED
•
OUTSIDE DIAMETER: 2.578 INCHES NOMINAL IN
•
SYSTEM FOR WHICH DESIGNED: NONPRESSURIZED
•
MATERIAL: STEEL BODY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.523 INCHES NOMINAL IN
STYLE DESIGNATORLOCKING TYPE VENTED
OUTSIDE DIAMETER2.578 INCHES NOMINAL IN
SYSTEM FOR WHICH DESIGNEDNONPRESSURIZED
MATERIALSTEEL BODY
SUBSTITUTES & CROSS-REFERENCES 1
CM7Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy B1990C?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is B1990C?
B1990C is a CAP,FILLER OPENING.
What parts can replace B1990C?
There is 1 known substitute for B1990C: CM7. Substitute compatibility should be verified for your specific system.
What is the NSN for B1990C?
B1990C is cataloged in the U.S. Government catalog under NSN 2590-00-256-2594. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — B1990C

✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.