PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21224Stiffener Bar

Smiths Aerospace, Inc., Electronic Systems-Grand Rapids · NSN 1680-01-100-4963 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-01-100-4963 — this item is cataloged by the U.S. Government under National Stock Number 1680-01-100-4963. Primary manufacturer part number: 21224.
Features
  • Stiffener Bar — FSC 1680
  • General Characteristics Item Description: MATERIAL AL ALLOY 2024-T351,FINISH CHEM1CAL FILM MIL-C-5541 CL 1A; LG 6.995 IN.,4 HOLES 4/0.112/-40 UNC-2B;4 HOLES 4/0.112/-40 UNC-2BX.25 FULL THD; 2 HOLES 4/0.112/-40 UNC-2BX.38 FULLTHD; 6.500 IN. CENTER TO CENTER OF OUTER HOLES A
  • 2 verified cross-references
  • Primary manufacturer: Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Stiffener Bar, cataloged under National Stock Number 1680-01-100-4963, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Smiths Aerospace, Inc., Electronic Systems-Grand Rapids. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN1680-01-100-4963
Primary Part Number21224
Item NameStiffener Bar
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerSmiths Aerospace, Inc., Electronic Systems-Grand Rapids
StatusACTIVE
General Characteristics Item DescriptionMATERIAL AL ALLOY 2024-T351,FINISH CHEM1CAL FILM MIL-C-5541 CL 1A; LG 6.995 IN.,4 HOLES 4/0.112/-40 UNC-2B;4 HOLES 4/0.112/-40 UNC-2BX.25 FULL THD; 2 HOLES 4/0.112/-40 UNC-2BX.38 FULLTHD; 6.500 IN. CENTER TO CENTER OF OUTER HOLES A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2805-00-214-137221224 INTERCHANGEABLE
Ring,piston
Briggs and Stratton Corp
1730-00-268-291421224 INTERCHANGEABLE
Rig,caster Assembly
Aerol Llc
5365-00-367-1808219 INTERCHANGEABLE
Shim
Industrial Technologies and Services Llc
5910-00-761-4530 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
5905-00-863-56418437014 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
6685-01-019-829321224 INTERCHANGEABLE
Thermostat,air Cond
Noske-Kaeser Germany Gmbh
4720-01-075-5070 INTERCHANGEABLE
Hose,nonmetallic
5330-01-166-233721224 INTERCHANGEABLE
Packing,preformed
Kidde Technologies, Inc Div Kidde Aerospace and Defense
5130-01-355-1888 INTERCHANGEABLE
Socket,socket Wrench
5120-01-443-312321224 INTERCHANGEABLE
Inserter,screw Thread Insert
Time Fastener Co Inc
Cross-Reference Index
Part NumberManufacturer
21224 PRIMARY Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
21224G Smiths Aerospace, Inc., Electronic Systems-Grand Rapids (USA)
Related Parts
2805-00-214-1372INTERCHANGEABLE
RING,PISTON
21224
1730-00-268-2914INTERCHANGEABLE
RIG,CASTER ASSEMBLY
21224
5365-00-367-1808INTERCHANGEABLE
SHIM
219
5910-00-761-4530INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
5905-00-863-5641INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
8437014
6685-01-019-8293INTERCHANGEABLE
THERMOSTAT,AIR COND
21224
4720-01-075-5070INTERCHANGEABLE
HOSE,NONMETALLIC
5330-01-166-2337INTERCHANGEABLE
PACKING,PREFORMED
21224
5130-01-355-1888INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5120-01-443-3123INTERCHANGEABLE
INSERTER,SCREW THREAD INSERT
21224
1095-01-571-2712INTERCHANGEABLE
HOLSTER,PISTOL
21224
5963-01-685-9268INTERCHANGEABLE
ELECTRONIC MODULE,STANDARDIZED
76-18914

Frequently Asked Questions

What is NSN 1680-01-100-4963?

NSN 1680-01-100-4963 is a Stiffener Bar, manufactured by Smiths Aerospace, Inc., Electronic Systems-Grand Rapids, classified under FSC 1680 (No Item Name Available). Status: active.

What are the part numbers for NSN 1680-01-100-4963?

NSN 1680-01-100-4963 has 2 cross-referenced part numbers: 21224 (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids), 21224G (Smiths Aerospace, Inc., Electronic Systems-Grand Rapids).

What NSN replaces 1680-01-100-4963?

There are 12 known substitutes for 1680-01-100-4963: 2805-00-214-1372, 1730-00-268-2914, 5365-00-367-1808 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21224?

Key specifications for 21224: General Characteristics Item Description: MATERIAL AL ALLOY 2024-T351,FINISH CHEM1CAL FILM MIL-C-5541 CL 1A; LG 6.995 IN.,4 HOLES 4/0.112/-40 UNC-2B;4 HOLES 4/0.112/-40 UNC-2BX.25 FULL THD; 2 HOLES 4/0.112/-40 UNC-2BX.38 FULLTHD; 6.500 IN. CENTER TO CENTER OF OUTER HOLES A. 1 total characteristics are documented in the Federal Logistics Information System.

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