PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

520-13550-6Adapter,straight,flange to Flang

The Boeing Company Div Legacy Wichita · NSN 4730-01-268-0251 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-268-0251 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-268-0251. Primary manufacturer part number: 520-13550-6.
Features
  • Adapter,straight,flange to Flang — FSC 4730
  • 10 verified cross-references
  • Primary manufacturer: The Boeing Company Div Legacy Wichita
Applications
  • Plumbing and fluid distribution
  • Industrial piping systems
  • Fuel and lubricant distribution
General Description

The Adapter,straight,flange to Flang, cataloged under National Stock Number 4730-01-268-0251, 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 Legacy Wichita. This item has 10 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameAdapter,straight,flange to Flang
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersThe Boeing Company Div Defense (CAGE 81205); The Boeing Company Div Legacy Wichita (CAGE 82918); Bfgoodrich Co the Aerospace Div Engineered Polymer Products (CAGE 03481); Fmh Aerospace Corp. (CAGE 99755)
Technical Specifications
ParameterValue
NSN4730-01-268-0251
Primary Part Number520-13550-6
Item NameAdapter,straight,flange to Flang
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe Boeing Company Div Legacy Wichita
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6145-00-160-4775 INTERCHANGEABLE
Wire,electrical
5830-00-222-1662 INTERCHANGEABLE
Intercommunication Station
5210-00-224-8810298 INTERCHANGEABLE
Clamp,key Seat
L.s. Starrett Company (the) Div Tool Division
5330-00-286-6847500245 INTERCHANGEABLE
Seal,plain Encased
Defense Logistics Agency Dba Defense Supply Center Philadelphia
2530-00-374-9837298 INTERCHANGEABLE
Seat,ball Socket
Eaton Aerospace, Llc Dba Jackson South
6240-00-615-8169 INTERCHANGEABLE
Lamp
4730-00-627-3429520-13550-1 INTERCHANGEABLE
Coupling,tolerance
The Boeing Company Div Legacy Wichita
7610-00-823-7890298 INTERCHANGEABLE
Manual,technical
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5935-00-934-2624298 INTERCHANGEABLE
Plug,telephone
Switchcraft Inc.
5999-01-137-5399 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Cross-Reference Index
Part NumberManufacturer
520-13550-6 The Boeing Company Div Defense (USA)
520-13550-6 PRIMARY The Boeing Company Div Legacy Wichita (USA)
5A1082 Bfgoodrich Co the Aerospace Div Engineered Polymer Products (USA)
10-20087-11 The Boeing Company Div Defense (USA)
520-13350-6 The Boeing Company Div Defense (USA)
520-13550-6 PRIMARY Fmh Aerospace Corp. (USA)
298 Fmh Aerospace Corp. (USA)
10-20087 The Boeing Company Div Defense (USA)
520-13350-6 The Boeing Company Div Legacy Wichita (USA)
520-13350-6 Fmh Aerospace Corp. (USA)
Related Parts
6145-00-160-4775INTERCHANGEABLE
WIRE,ELECTRICAL
5830-00-222-1662INTERCHANGEABLE
INTERCOMMUNICATION STATION
5210-00-224-8810INTERCHANGEABLE
CLAMP,KEY SEAT
298
5330-00-286-6847INTERCHANGEABLE
SEAL,PLAIN ENCASED
500245
2530-00-374-9837INTERCHANGEABLE
SEAT,BALL SOCKET
298
6240-00-615-8169INTERCHANGEABLE
LAMP
4730-00-627-3429INTERCHANGEABLE
COUPLING,TOLERANCE
520-13550-1
7610-00-823-7890INTERCHANGEABLE
MANUAL,TECHNICAL
298
5935-00-934-2624INTERCHANGEABLE
PLUG,TELEPHONE
298
5999-01-137-5399INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
6515-01-139-8957INTERCHANGEABLE
OSTEOTOME SET
00029800000
6130-01-164-6752INTERCHANGEABLE
POWER SUPPLY
298

Frequently Asked Questions

What is NSN 4730-01-268-0251?

NSN 4730-01-268-0251 is a Adapter,straight,flange to Flang, manufactured by The Boeing Company Div Legacy Wichita, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-268-0251?

NSN 4730-01-268-0251 has 10 cross-referenced part numbers: 520-13550-6 (The Boeing Company Div Defense), 520-13550-6 (The Boeing Company Div Legacy Wichita), 5A1082 (Bfgoodrich Co the Aerospace Div Engineered Polymer Products), 10-20087-11 (The Boeing Company Div Defense), 520-13350-6 (The Boeing Company Div Defense) and 5 more.

What NSN replaces 4730-01-268-0251?

There are 12 known substitutes for 4730-01-268-0251: 6145-00-160-4775, 5830-00-222-1662, 5210-00-224-8810 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com