PartsTable
Technical Data Sheet
Download PDF

DY90-A-2 — SEAL,CONICAL,FLARED TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

DY90-A-2: SEAL,CONICAL,FLARED TUBE FITTING.

SEAL,CONICAL,FLARED TUBE FITTING. Key specifications include material: ALUMINUM ALLOY 1100, body_length: 0.060 INCHES NOMINAL IN, wall_thickness: 0.005 INCHES NOMINAL IN, outside_diameter: 0.255 INCHES NOMINAL IN, style_designator: SEAL, seat_angle_in_deg: 37.0. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-090-6710, 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
DY90-A-2
NSN: 4730-01-090-6710
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 92215 — HOWMET GLOBAL FASTENING SYSTEMS INC DIV TORRANCE OPERATIONS (USA)
SPECIFICATIONS
materialALUMINUM ALLOY 1100
body_length0.060 INCHES NOMINAL IN
wall_thickness0.005 INCHES NOMINAL IN
outside_diameter0.255 INCHES NOMINAL IN
style_designatorSEAL
seat_angle_in_deg37.0
casehardening_indicatorNOT CASEHARDENED
end_item_identificationVALVE ASSY, MODEL 38E73-7A A
hose/tube_outside_diameter_for_which_designed0.125 INCHES NOMINAL IN
NSN4730-01-090-6710
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: DY90-A-2 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
SEAT ANGLE IN DEG: 37.0
•
STYLE DESIGNATOR: SEAL
•
WALL THICKNESS: 0.005 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.255 INCHES NOMINAL IN
•
BODY LENGTH: 0.060 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: ALUMINUM ALLOY 1100
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG37.0
STYLE DESIGNATORSEAL
WALL THICKNESS0.005 INCHES NOMINAL IN
OUTSIDE DIAMETER0.255 INCHES NOMINAL IN
BODY LENGTH0.060 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
END ITEM IDENTIFICATIONVALVE ASSY, MODEL 38E73-7A A
MATERIALALUMINUM ALLOY 1100
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.125 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 2
SECO 7A2Reference document
Same NSN cross-reference
Reference document — Secondary reference
DY90Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy DY90-A-2?
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 DY90-A-2?
DY90-A-2 is a SEAL,CONICAL,FLARED TUBE FITTING.
What parts can replace DY90-A-2?
There are 2 known substitutes for DY90-A-2: SECO 7A2, DY90. Substitute compatibility should be verified for your specific system.
What is the NSN for DY90-A-2?
DY90-A-2 is cataloged in the U.S. Government catalog under NSN 4730-01-090-6710. 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 — DY90-A-2

✓ 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.