PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

646843Tube Assembly,metal

Kreisler Industrial Corporation · NSN 4710-00-811-5655 · FSC 4710 · No Item Name Available
Verified by PartsTable
NSN 4710-00-811-5655 — this item is cataloged by the U.S. Government under National Stock Number 4710-00-811-5655. Primary manufacturer part number: 646843.
Features
  • Tube Assembly,metal — FSC 4710
  • Thread Class: 3B SINGLE END
  • Design Form: PREBENT
  • Material: STEEL COMP 321 TUBING
  • FSC Application Data: FUEL SYSTEM,ENGINE,AIRCRAFT
  • Thread Series Designator: UNF SINGLE END
  • Material Document and Classification: AMS 5570 ASSN STD SINGLE MATERIAL RESPONSE TUBING
  • Material Document and Classification: AMS 5570 ASSN STD SINGLE MATERIAL RESPONSE SINGLE END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 321 Tubing construction
General Description

The Tube Assembly,metal, cataloged under National Stock Number 4710-00-811-5655, is classified within Federal Supply Class 4710 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Kreisler Industrial Corporation. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4710-00-811-5655
Primary Part Number646843
Item NameTube Assembly,metal
FSC / FSG4710 / 47 — No Item Name Available
ManufacturerKreisler Industrial Corporation
StatusCANCELLED
Thread Class3B SINGLE END
Design FormPREBENT
MaterialSTEEL COMP 321 TUBING
FSC Application DataFUEL SYSTEM,ENGINE,AIRCRAFT
Thread Series DesignatorUNF SINGLE END
Material Document and ClassificationAMS 5570 ASSN STD SINGLE MATERIAL RESPONSE TUBING
Material Document and ClassificationAMS 5570 ASSN STD SINGLE MATERIAL RESPONSE SINGLE END
Seat Angle in Deg37.0 SINGLE END
Tube Outside Diameter0.371 INCHES MINIMUM AND 0.379 INCHES MAXIMUM IN
Thread DirectionRIGHT-HAND SINGLE END
Nominal Thread Size0.562 INCHES SINGLE END IN
MaterialSTEEL COMP 321 SINGLE END
End Connection StyleSWIVEL NUT, FLARED SINGLE END
Wall Thickness0.031 INCHES MINIMUM AND 0.039 INCHES MAXIMUM IN
Mating End Quantity2 SINGLE END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5999-00-552-5355 INTERCHANGEABLE
Holder,contact
5905-00-666-1140 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
5325-00-805-9529 INTERCHANGEABLE
Ring,retaining
5950-00-931-39871783709-47 INTERCHANGEABLE
Transformer,audio Frequency
Honeywell International Inc. Dba Honeywell International
4820-01-294-1628 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Cross-Reference Index
Part NumberManufacturer
646843 PRIMARY Kreisler Industrial Corporation (USA)
441842 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
646843 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
406397 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
458115 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
646841 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
Related Parts
5999-00-552-5355INTERCHANGEABLE
HOLDER,CONTACT
5905-00-666-1140INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
5325-00-805-9529INTERCHANGEABLE
RING,RETAINING
5950-00-931-3987INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
1783709-47
4820-01-294-1628INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE

Frequently Asked Questions

What is NSN 4710-00-811-5655?

NSN 4710-00-811-5655 is a Tube Assembly,metal, manufactured by Kreisler Industrial Corporation, classified under FSC 4710 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4710-00-811-5655?

NSN 4710-00-811-5655 has 6 cross-referenced part numbers: 646843 (Kreisler Industrial Corporation), 441842 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 646843 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 406397 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 458115 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney) and 1 more.

What NSN replaces 4710-00-811-5655?

There are 5 known substitutes for 4710-00-811-5655: 5999-00-552-5355, 5905-00-666-1140, 5325-00-805-9529 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 646843?

Key specifications for 646843: Thread Class: 3B SINGLE END; Design Form: PREBENT; Material: STEEL COMP 321 TUBING; FSC Application Data: FUEL SYSTEM,ENGINE,AIRCRAFT. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4710-00-811-5655 still in active supply?

NSN 4710-00-811-5655 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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