PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4501-251Connecting Link,rigid

Tyee Aircraft Inc Div Tyee Aircraft · NSN 3040-00-388-9923 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-388-9923 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-388-9923. Primary manufacturer part number: 4501-251.
Features
  • Connecting Link,rigid — FSC 3040
  • Body Diameter: 1.125 INCHES NOMINAL IN
  • End Attachment Length: 2.531 INCHES NOMINAL FIRST END IN
  • Body Construction: TUBULAR
  • End Attachment Style: EYE FIRST END
  • End Attachment Width: 0.406 INCHES NOMINAL FIRST END IN
  • Material: ALUMINUM ALLOY
  • Link Style: SOLID SHANK
Applications
  • Applications requiring Aluminum Alloy construction
General Description

The Connecting Link,rigid, cataloged under National Stock Number 3040-00-388-9923, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Tyee Aircraft Inc Div Tyee Aircraft. Government technical data includes 8 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-388-9923
Primary Part Number4501-251
Item NameConnecting Link,rigid
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerTyee Aircraft Inc Div Tyee Aircraft
StatusACTIVE
Body Diameter1.125 INCHES NOMINAL IN
End Attachment Length2.531 INCHES NOMINAL FIRST END IN
Body ConstructionTUBULAR
End Attachment StyleEYE FIRST END
End Attachment Width0.406 INCHES NOMINAL FIRST END IN
MaterialALUMINUM ALLOY
Link StyleSOLID SHANK
End Attachment Hole Diameter0.375 INCHES NOMINAL FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
6240-00-060-2941683 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
3040-00-225-26794069-1 INTERCHANGEABLE
Brake,clock
Wakmann Watch Company Inc
5961-00-524-1782 INTERCHANGEABLE
Semiconductor Device,thyristor
5840-00-654-727540691 INTERCHANGEABLE
Handle,handcrank
Honeywell International Inc. Div Aerospace - Torrance
6685-00-918-1695H6084 INTERCHANGEABLE
Gage,pressure,dial Indicating
Bellofram Corporation
5920-00-953-07064069-1-600V INTERCHANGEABLE
Arrester,electrical Surge
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5930-01-214-1840221588-1 INTERCHANGEABLE
Switch,push
Bowmar Llc Dba Bowmar Instrument Corp
5915-01-459-7303 INTERCHANGEABLE
Filter,band Pass
Cross-Reference Index
Part NumberManufacturer
4501-251 PRIMARY Tyee Aircraft Inc Div Tyee Aircraft (USA)
68B418000-251 The Boeing Company Div Defense (USA)
4069-1 Tyee Aircraft Inc Div Tyee Aircraft (USA)
Related Parts
6240-00-060-2941INTERCHANGEABLE
LAMP,INCANDESCENT
683
3040-00-225-2679INTERCHANGEABLE
BRAKE,CLOCK
4069-1
5961-00-524-1782INTERCHANGEABLE
SEMICONDUCTOR DEVICE,THYRISTOR
5840-00-654-7275INTERCHANGEABLE
HANDLE,HANDCRANK
40691
6685-00-918-1695INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
H6084
5920-00-953-0706INTERCHANGEABLE
ARRESTER,ELECTRICAL SURGE
4069-1-600V
5930-01-214-1840INTERCHANGEABLE
SWITCH,PUSH
221588-1
5915-01-459-7303INTERCHANGEABLE
FILTER,BAND PASS

Frequently Asked Questions

What is NSN 3040-00-388-9923?

NSN 3040-00-388-9923 is a Connecting Link,rigid, manufactured by Tyee Aircraft Inc Div Tyee Aircraft, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-388-9923?

NSN 3040-00-388-9923 has 3 cross-referenced part numbers: 4501-251 (Tyee Aircraft Inc Div Tyee Aircraft), 68B418000-251 (The Boeing Company Div Defense), 4069-1 (Tyee Aircraft Inc Div Tyee Aircraft).

What NSN replaces 3040-00-388-9923?

There are 8 known substitutes for 3040-00-388-9923: 6240-00-060-2941, 3040-00-225-2679, 5961-00-524-1782 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4501-251?

Key specifications for 4501-251: Body Diameter: 1.125 INCHES NOMINAL IN; End Attachment Length: 2.531 INCHES NOMINAL FIRST END IN; Body Construction: TUBULAR; End Attachment Style: EYE FIRST END. 9 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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