PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SECO7A6XSeal,conical,flared Tube Fitting

Seco Seals, Inc · NSN 4730-01-070-3103 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-070-3103 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-070-3103. Primary manufacturer part number: SECO7A6X.
Features
  • Seal,conical,flared Tube Fitting — FSC 4730
  • Body Length: 0.060 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
  • Outside Diameter: 0.486 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
  • Seat Angle in Deg: 37.0
  • Hose/tube Outside Diameter for Which Designed: 0.375 INCHES NOMINAL IN
  • Material Document and Classification: QQ-A-250/1,O FED SPEC 1ST MATERIAL RESPONSE OR AMS 4001 ASSN STD 2ND MATERIAL RESPONSE
  • Material: ALUMINUM ALLOY 1100
  • Style Designator: SEAL
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 4730-01-070-3103, 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 Seco Seals, Inc. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 11 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-01-070-3103
Primary Part NumberSECO7A6X
Item NameSeal,conical,flared Tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerSeco Seals, Inc
StatusCANCELLED
Body Length0.060 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
Outside Diameter0.486 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN
Seat Angle in Deg37.0
Hose/tube Outside Diameter for Which Designed0.375 INCHES NOMINAL IN
Material Document and ClassificationQQ-A-250/1,O FED SPEC 1ST MATERIAL RESPONSE OR AMS 4001 ASSN STD 2ND MATERIAL RESPONSE
MaterialALUMINUM ALLOY 1100
Style DesignatorSEAL
Wall Thickness0.005 INCHES NOMINAL IN
Casehardening IndicatorNOT CASEHARDENED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
5960-00-114-3803 INTERCHANGEABLE
Electron Tube
5960-00-617-8610 INTERCHANGEABLE
Electron Tube
4730-00-779-06197827256-43 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-00-871-1340SEC027A6 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Seco Seals, Inc
4730-00-907-40857827256-15 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-31027827256-35 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-35077827256-25 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-83447827256-31 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
4730-01-070-8582DY90-A-28 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Del Aerospace Inc Dba Del Aerospace Inc
4730-01-070-98897827256-27 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force
Cross-Reference Index
Part NumberManufacturer
7827256 Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
7A6 Seco Seals, Inc (USA)
SECO7A6X PRIMARY Seco Seals, Inc (USA)
326991P02 Howden Fluid Systems (USA)
326991P02 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
7827256-11 PRIMARY Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force (USA)
DY90-A-6 Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company (USA)
SECO7A6 PRIMARY Seco Seals, Inc (USA)
DY90-A-6 PRIMARY Del Aerospace Inc Dba Del Aerospace Inc (USA)
DY90 Del Aerospace Inc Dba Del Aerospace Inc (USA)
DY90-A-6 Delavan Volunteer Fire Dept (USA)
Related Parts
5960-00-114-3803INTERCHANGEABLE
ELECTRON TUBE
5960-00-617-8610INTERCHANGEABLE
ELECTRON TUBE
4730-00-779-0619INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-43
4730-00-871-1340INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027A6
4730-00-907-4085INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-15
4730-01-070-3102INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-35
4730-01-070-3507INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-25
4730-01-070-8344INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-31
4730-01-070-8582INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
DY90-A-28
4730-01-070-9889INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-27

Frequently Asked Questions

What is NSN 4730-01-070-3103?

NSN 4730-01-070-3103 is a Seal,conical,flared Tube Fitting, manufactured by Seco Seals, Inc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-01-070-3103?

NSN 4730-01-070-3103 has 11 cross-referenced part numbers: 7827256 (Air Force United States Department of the Dba Tinker Afb Oc Alc Dsp Div Department of the Air Force), 7A6 (Seco Seals, Inc), SECO7A6X (Seco Seals, Inc), 326991P02 (Howden Fluid Systems), 326991P02 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.) and 6 more.

What NSN replaces 4730-01-070-3103?

There are 10 known substitutes for 4730-01-070-3103: 5960-00-114-3803, 5960-00-617-8610, 4730-00-779-0619 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SECO7A6X?

Key specifications for SECO7A6X: Body Length: 0.060 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; End Item Identification: AIRCRAFT, STRATOLIFTER C-135; Outside Diameter: 0.486 INCHES MINIMUM AND 0.491 INCHES MAXIMUM IN; Seat Angle in Deg: 37.0. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-01-070-3103 still in active supply?

NSN 4730-01-070-3103 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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