PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

7M27A4Seal,conical,flared Tube Fitting

The Boeing Company Div Defense · NSN 4730-00-871-1339 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-871-1339 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-871-1339. Primary manufacturer part number: 7M27A4.
Features
  • Seal,conical,flared Tube Fitting — FSC 4730
  • 21 verified cross-references
  • Primary manufacturer: The Boeing Company Div Defense
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 4730-00-871-1339, 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 The Boeing Company Div Defense. This item has 21 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Catalog Facts
Item NameSeal,conical,flared Tube Fitting
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersGoodrich Corporation Dba Trw Lucas Aerospace (CAGE 00462); Howmet Global Fastening Systems Inc Div Rosan Products (CAGE 83324); Seco Seals, Inc (CAGE 33447); Lockheed Martin Corporation Div Rotary and Mission Systems (CAGE 38597); Triumph Gear Systems Inc Dba Triumph Gear Systems Inc (CAGE 82402)
Technical Specifications
ParameterValue
NSN4730-00-871-1339
Primary Part Number7M27A4
Item NameSeal,conical,flared Tube Fitting
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4730-00-078-8519SEC027C12L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Howmet Global Fastening Systems Inc Div Torrance Operations
5960-00-114-3805 INTERCHANGEABLE
Electron Tube
4730-00-606-17167M27A16 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
The Boeing Company Div Defense
5360-00-630-4687 INTERCHANGEABLE
Spring,helical,compression
5310-00-675-7246368424 INTERCHANGEABLE
Nut,dee Offset
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
4730-00-764-7546DY90-C-32L INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Del Aerospace Inc Dba Del Aerospace Inc
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
4730-00-789-4386966216-106 INTERCHANGEABLE
Seal,conical,flared Tube Fitting
Raytheon Company Dba Raytheon
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
Cross-Reference Index
Part NumberManufacturer
44300-550-1 Goodrich Corporation Dba Trw Lucas Aerospace (USA)
VSF1015A4 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
7A4 Seco Seals, Inc (USA)
55E211 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
44300-550-1 Triumph Gear Systems Inc Dba Triumph Gear Systems Inc (USA)
VSF1015 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
S0254A4 The Boeing Company (USA)
AP100A4 Sps Technologies, Llc Dba Airdrome Precision Components (USA)
55E211-D4 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
VSF1015A4SP Howmet Global Fastening Systems Inc Div Rosan Products (USA)
DY90-A-4L Del Aerospace Inc Dba Del Aerospace Inc (USA)
VSF1015A4SP Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
DY90-A-4L Designed Metal Connections Inc Dba Permaswage Usa Div Permaswage, a Pcc Company (USA)
VSF1015A4 Howmet Global Fastening Systems Inc Div Torrance Operations (USA)
55E211-D4 Lockheed Martin Corp (USA)
VSF1015A4 Fairchild Fasteners Europe - Vsd Gmbh (DEU)
7M27 The Boeing Company Div Defense (USA)
SEC027A4 Seco Seals, Inc (USA)
S0254 The Boeing Company (USA)
DY90 Del Aerospace Inc Dba Del Aerospace Inc (USA)
Related Parts
4730-00-078-8519INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027C12L
5960-00-114-3805INTERCHANGEABLE
ELECTRON TUBE
4730-00-606-1716INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7M27A16
5360-00-630-4687INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
5310-00-675-7246INTERCHANGEABLE
NUT,DEE OFFSET
368424
4730-00-764-7546INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
DY90-C-32L
4730-00-779-0619INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-43
4730-00-789-4386INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
966216-106
4730-00-871-1340INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
SEC027A6
4730-00-907-4085INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
7827256-15
4730-00-936-5186INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
S0254A8
4730-00-960-3002INTERCHANGEABLE
SEAL,CONICAL,FLARED TUBE FITTING
10158973-2

Frequently Asked Questions

What is NSN 4730-00-871-1339?

NSN 4730-00-871-1339 is a Seal,conical,flared Tube Fitting, manufactured by The Boeing Company Div Defense, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-871-1339?

NSN 4730-00-871-1339 has 21 cross-referenced part numbers: 44300-550-1 (Goodrich Corporation Dba Trw Lucas Aerospace), VSF1015A4 (Howmet Global Fastening Systems Inc Div Rosan Products), 7A4 (Seco Seals, Inc), 55E211 (Lockheed Martin Corporation Div Rotary and Mission Systems), 44300-550-1 (Triumph Gear Systems Inc Dba Triumph Gear Systems Inc) and 16 more.

What NSN replaces 4730-00-871-1339?

There are 12 known substitutes for 4730-00-871-1339: 4730-00-078-8519, 5960-00-114-3805, 4730-00-606-1716 and 9 more. Verify interchangeability with system specifications before substitution.

Is NSN 4730-00-871-1339 still in active supply?

NSN 4730-00-871-1339 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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