PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

DY90-T-12LSeal,conical,flared Tube Fitting

Del Aerospace Inc Dba Del Aerospace Inc · NSN 4730-01-117-6589 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-117-6589 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-117-6589. Primary manufacturer part number: DY90-T-12L.
Features
  • Seal,conical,flared Tube Fitting — FSC 4730
  • Casehardening Indicator: NOT CASEHARDENED
  • Body Length: 0.105 INCHES NOMINAL IN
  • Outside Diameter: 0.948 INCHES NOMINAL IN
  • Seat Angle in Deg: 37.0
  • Hose/tube Outside Diameter for Which Designed: 0.750 INCHES NOMINAL IN
  • Surface Treatment: TIN
  • Material: COPPER ALLOY
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Fluid conveyance
  • Hydraulic system plumbing
General Description

The Seal,conical,flared Tube Fitting, cataloged under National Stock Number 4730-01-117-6589, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Del Aerospace Inc Dba Del Aerospace Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-01-117-6589
Primary Part NumberDY90-T-12L
Item NameSeal,conical,flared Tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDel Aerospace Inc Dba Del Aerospace Inc
StatusCANCELLED
Casehardening IndicatorNOT CASEHARDENED
Body Length0.105 INCHES NOMINAL IN
Outside Diameter0.948 INCHES NOMINAL IN
Seat Angle in Deg37.0
Hose/tube Outside Diameter for Which Designed0.750 INCHES NOMINAL IN
Surface TreatmentTIN
MaterialCOPPER ALLOY
Style DesignatorSEAL
Wall Thickness0.010 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
4730-00-078-8519SEC027C12L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Howmet Global Fastening Systems Inc Div Torrance Operations
4730-00-871-13397M27A4 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
The Boeing Company Div Defense
4730-00-871-1340SEC027A6 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Seco Seals, Inc
4730-00-960-300210158973-2 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Us Army Aviation and Missile Command
4730-01-102-59647M27CT16 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
The Boeing Company Div Defense
4730-01-211-93997M27CT2 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
The Boeing Company Div Defense
4730-01-286-8841DY90-T-3L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Del Aerospace Inc Dba Del Aerospace Inc
Cross-Reference Index
Part NumberManufacturer
DY90-T-12L PRIMARY Del Aerospace Inc Dba Del Aerospace Inc (USA)
SEC027CT12 Seco Seals, Inc (USA)
966216-108 Raytheon Company Dba Raytheon (USA)
VSF1015CT12SP Howmet Global Fastening Systems Inc Div Rosan / Eagle Products (USA)
VSF1015CT12SP Howmet Global Fastening Systems Inc Div Rosan Products (USA)
DY90 Del Aerospace Inc Dba Del Aerospace Inc (USA)
VSF1015CT12SP Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
7M27CT12 The Boeing Company Div Defense (USA)
7M27 The Boeing Company Div Defense (USA)
Related Parts
4730-00-078-8519INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027C12L
4730-00-871-1339INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7M27A4
4730-00-871-1340INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027A6
4730-00-960-3002INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
10158973-2
4730-01-102-5964INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7M27CT16
4730-01-211-9399INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7M27CT2
4730-01-286-8841INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
DY90-T-3L

Frequently Asked Questions

What is NSN 4730-01-117-6589?

NSN 4730-01-117-6589 is a Seal,conical,flared Tube Fitting, manufactured by Del Aerospace Inc Dba Del Aerospace Inc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-01-117-6589?

NSN 4730-01-117-6589 has 9 cross-referenced part numbers: DY90-T-12L (Del Aerospace Inc Dba Del Aerospace Inc), SEC027CT12 (Seco Seals, Inc), 966216-108 (Raytheon Company Dba Raytheon), VSF1015CT12SP (Howmet Global Fastening Systems Inc Div Rosan / Eagle Products), VSF1015CT12SP (Howmet Global Fastening Systems Inc Div Rosan Products) and 4 more.

What NSN replaces 4730-01-117-6589?

There are 7 known substitutes for 4730-01-117-6589: 4730-00-078-8519, 4730-00-871-1339, 4730-00-871-1340 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of DY90-T-12L?

Key specifications for DY90-T-12L: Casehardening Indicator: NOT CASEHARDENED; Body Length: 0.105 INCHES NOMINAL IN; Outside Diameter: 0.948 INCHES NOMINAL IN; Special Features: L AFTER DASH NUMBER WILL BE LOX CLEANED AND PACKAGED IN ACCORDANCE WITH MAC SPECIFICATION 27M100. 11 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-117-6589 still in active supply?

NSN 4730-01-117-6589 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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