PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-3920-21Stiffener,aircraft

The Boeing Company Div Defense · NSN 1560-01-710-5567 · FSC 1560 · No Item Name Available
Verified by PartsTable
NSN 1560-01-710-5567 — this item is cataloged by the U.S. Government under National Stock Number 1560-01-710-5567. Primary manufacturer part number: 4-3920-21.
Features
  • Stiffener,aircraft — FSC 1560
  • 10 verified cross-references
  • Primary manufacturer: The Boeing Company Div Defense
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Stiffener,aircraft, cataloged under National Stock Number 1560-01-710-5567, is classified within Federal Supply Class 1560 (No Item Name Available) of the Aircraft and Airframe Components group. The primary manufacturer of record is The Boeing Company Div Defense. This item has 10 commercial cross-references from 9 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 NameStiffener,aircraft
FSC / FSG1560 — No Item Name Available (FSG 15)
ManufacturersMalones Cnc Machining Inc (CAGE 2V045); D-J Engineering Inc Dba D-J Engineering Inc (CAGE 0C7H8); Aero Components, Llc (CAGE 59213); Camnetics Manufacturing Corporation (CAGE 0P657); Infinity Fabrication, Inc. (CAGE 06DM5)
Technical Specifications
ParameterValue
NSN1560-01-710-5567
Primary Part Number4-3920-21
Item NameStiffener,aircraft
FSC / FSG1560 / 15 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5331-00-584-1590322314 ITEM 137 INTERCHANGEABLE
O-Ring
Lake Shore Systems, Inc.
5962-01-219-6695439202-1 INTERCHANGEABLE
Microcircuit,memory
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
1560-01-709-08694-3920-10 INTERCHANGEABLE
Support,structural Component,air
The Boeing Company Div Defense
1560-01-709-13304-3920-28 INTERCHANGEABLE
Hinge,aircraft
The Boeing Company Div Defense
1560-01-710-46844-3920-14 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-710-49024-3920-15 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-710-50644-3920-12 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-710-53174-3920-33 INTERCHANGEABLE
Support,structural Component,air
The Boeing Company Div Defense
1560-01-710-53584-3920-18 INTERCHANGEABLE
Stiffener,aircraft
The Boeing Company Div Defense
1560-01-710-54184-3920-31 INTERCHANGEABLE
Plate,structural,aircraft
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
4-3920-21 Malones Cnc Machining Inc (USA)
4-3920-21 D-J Engineering Inc Dba D-J Engineering Inc (USA)
4-3920-21 Aero Components, Llc (USA)
4-3920-21 Camnetics Manufacturing Corporation (USA)
4-3920-21 Infinity Fabrication, Inc. (USA)
4-3920-21 Volumatic Inc Dba Volumatic Inc (USA)
4-3920-21 Nordam Group Llc, the Div Nordam (USA)
4-3920-21 Fmw, Inc. (USA)
4-3920 The Boeing Company Div Defense (USA)
4-3920-21 PRIMARY The Boeing Company Div Defense (USA)
Related Parts
5331-00-584-1590INTERCHANGEABLE
O-RING
322314 ITEM 137
5962-01-219-6695INTERCHANGEABLE
MICROCIRCUIT,MEMORY
439202-1
1560-01-709-0869INTERCHANGEABLE
SUPPORT,STRUCTURAL COMPONENT,AIR
4-3920-10
1560-01-709-1330INTERCHANGEABLE
HINGE,AIRCRAFT
4-3920-28
1560-01-710-4684INTERCHANGEABLE
STIFFENER,AIRCRAFT
4-3920-14
1560-01-710-4902INTERCHANGEABLE
STIFFENER,AIRCRAFT
4-3920-15
1560-01-710-5064INTERCHANGEABLE
STIFFENER,AIRCRAFT
4-3920-12
1560-01-710-5317INTERCHANGEABLE
SUPPORT,STRUCTURAL COMPONENT,AIR
4-3920-33
1560-01-710-5358INTERCHANGEABLE
STIFFENER,AIRCRAFT
4-3920-18
1560-01-710-5418INTERCHANGEABLE
PLATE,STRUCTURAL,AIRCRAFT
4-3920-31
1560-01-710-5428INTERCHANGEABLE
SUPPORT,STRUCTURAL COMPONENT,AIR
4-3920-34
1560-01-710-5593INTERCHANGEABLE
PLATE,STRUCTURAL,AIRCRAFT
4-3920-32

Frequently Asked Questions

What is NSN 1560-01-710-5567?

NSN 1560-01-710-5567 is a Stiffener,aircraft, manufactured by The Boeing Company Div Defense, classified under FSC 1560 (No Item Name Available). Status: active.

What are the part numbers for NSN 1560-01-710-5567?

NSN 1560-01-710-5567 has 10 cross-referenced part numbers: 4-3920-21 (Malones Cnc Machining Inc), 4-3920-21 (D-J Engineering Inc Dba D-J Engineering Inc), 4-3920-21 (Aero Components, Llc), 4-3920-21 (Camnetics Manufacturing Corporation), 4-3920-21 (Infinity Fabrication, Inc.) and 5 more.

What NSN replaces 1560-01-710-5567?

There are 12 known substitutes for 1560-01-710-5567: 5331-00-584-1590, 5962-01-219-6695, 1560-01-709-0869 and 9 more. Verify interchangeability with system specifications before substitution.

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