PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FS-2-9-L6 INShaft Assembly,flexible

Norma Pennsylvania Inc. Div Breeze Industrial Products · NSN 6680-00-221-1051 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-221-1051 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-221-1051. Primary manufacturer part number: FS-2-9-L6 IN.
Features
  • Shaft Assembly,flexible — FSC 6680
  • Tongue Thickness: 0.054 INCHES MINIMUM AND 0.063 INCHES MAXIMUM FIRST END IN
  • Thread Length: 0.438 INCHES NOMINAL BOTH ENDS IN
  • Wrenching Facility Type: HEXAGON BOTH ENDS
  • End Overall Diameter: 1.000 INCHES NOMINAL BOTH ENDS IN
  • Core Rotation Direction: CLOCKWISE OR COUNTERCLOCKWISE
  • Thread Location: INTERNAL BOTH ENDS
  • Casing Length Between Ferrules: 6.000 INCHES NOMINAL IN
Applications
  • Applications requiring Steel Core construction
General Description

The Shaft Assembly,flexible, cataloged under National Stock Number 6680-00-221-1051, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Norma Pennsylvania Inc. Div Breeze Industrial Products. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-221-1051
Primary Part NumberFS-2-9-L6 IN
Item NameShaft Assembly,flexible
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerNorma Pennsylvania Inc. Div Breeze Industrial Products
StatusACTIVE
Tongue Thickness0.054 INCHES MINIMUM AND 0.063 INCHES MAXIMUM FIRST END IN
Thread Length0.438 INCHES NOMINAL BOTH ENDS IN
Wrenching Facility TypeHEXAGON BOTH ENDS
End Overall Diameter1.000 INCHES NOMINAL BOTH ENDS IN
Core Rotation DirectionCLOCKWISE OR COUNTERCLOCKWISE
Thread LocationINTERNAL BOTH ENDS
Casing Length Between Ferrules6.000 INCHES NOMINAL IN
Core Diameter0.183 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
Cross Section Size and Location0.183 INCHES MINIMUM DIAMETER AND 0.188 INCHES MAXIMUM DIAMETER FIRST END IN
Minimum Operating Radius4.000 INCHES IN
Screw Thread Series DesignatorUNS BOTH ENDS
End Connection TypeTHREADED INTERNAL BOTH ENDS
End TypeROUND KEYED FIRST END
Casing Outside Diameter0.440 INCHES NOMINAL IN
Features ProvidedSWIVEL END BOTH ENDS
Tip Length0.688 INCHES NOMINAL FIRST END IN
Core Overall Length6.000 INCHES NOMINAL IN
Surface TreatmentZINC CASING
MaterialSTEEL CORE
MaterialSTEEL CASING
Thread DirectionRIGHT-HAND BOTH ENDS
Casing Protective Device TypeCOILED SPRING PROTECTOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-00-833-0654505-0002 INTERCHANGEABLE
Nipple,pipe
Cummins Power Generation Inc.
5340-01-544-97965050002 INTERCHANGEABLE
Cover,access
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
FS-2-9-L6 IN Norma Pennsylvania Inc. Div Breeze Industrial Products (USA)
505-0002 Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator (USA)
2FS9L6 Norma Pennsylvania Inc. Div Breeze Industrial Products (USA)
Related Parts
4730-00-833-0654INTERCHANGEABLE
NIPPLE,PIPE
505-0002
5340-01-544-9796INTERCHANGEABLE
COVER,ACCESS
5050002

Frequently Asked Questions

What is NSN 6680-00-221-1051?

NSN 6680-00-221-1051 is a Shaft Assembly,flexible, manufactured by Norma Pennsylvania Inc. Div Breeze Industrial Products, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-221-1051?

NSN 6680-00-221-1051 has 3 cross-referenced part numbers: FS-2-9-L6 IN (Norma Pennsylvania Inc. Div Breeze Industrial Products), 505-0002 (Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator), 2FS9L6 (Norma Pennsylvania Inc. Div Breeze Industrial Products).

What NSN replaces 6680-00-221-1051?

There are 2 known substitutes for 6680-00-221-1051: 4730-00-833-0654, 5340-01-544-9796. Verify interchangeability with system specifications before substitution.

What are the specifications of FS-2-9-L6 IN?

Key specifications for FS-2-9-L6 IN: Tongue Thickness: 0.054 INCHES MINIMUM AND 0.063 INCHES MAXIMUM FIRST END IN; Thread Length: 0.438 INCHES NOMINAL BOTH ENDS IN; Wrenching Facility Type: HEXAGON BOTH ENDS; End Overall Diameter: 1.000 INCHES NOMINAL BOTH ENDS IN. 24 total characteristics are documented in the Federal Logistics Information System.

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