PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

16325FXAdapter,straight,tube to Boss

Oshkosh Defense Llc · NSN 4730-00-051-5209 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-051-5209 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-051-5209. Primary manufacturer part number: 16325FX.
Features
  • Adapter,straight,tube to Boss — FSC 4730
  • Surface Treatment: PASSIVATE OVERALL
  • Nominal Overall Length: 1.375 INCHES IN
  • Media for Which Designed: AIR SECOND RESPONSE
  • Seat Angle: 37.0 DEGREES FIRST END
  • Media for Which Designed: HYDRAULIC FLUID FIRST RESPONSE
  • Furnished Items and Quantity: 1 FLARED SLEEVE AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT
  • Nominal Thread Size: 0.750 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Comp 316 or Steel Comp 304 Overall construction
General Description

The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-00-051-5209, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Oshkosh Defense Llc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 21 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-051-5209
Primary Part Number16325FX
Item NameAdapter,straight,tube to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerOshkosh Defense Llc
StatusCANCELLED
Surface TreatmentPASSIVATE OVERALL
Nominal Overall Length1.375 INCHES IN
Media for Which DesignedAIR SECOND RESPONSE
Seat Angle37.0 DEGREES FIRST END
Media for Which DesignedHYDRAULIC FLUID FIRST RESPONSE
Furnished Items and Quantity1 FLARED SLEEVE AND 1 PREFORMED PACKING AND 1 SHORT COUPLING NUT
Nominal Thread Size0.750 INCHES SECOND END IN
MaterialSTEEL COMP 316 OR STEEL COMP 304 OVERALL
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Surface Treatment Document and ClassificationQQ-P-35,TY 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
Material Document and Classification66,300 SERIES FED STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Thread Size0.562 INCHES FIRST END IN
Thread Series DesignatorUNF ALL ENDS
Specification/standard Data96906-MS51525 GOVERNMENT STANDARD
Maximum Operating Temp-65.0 FAHRENHEIT FIRST RESPONSE DEGF
Thread Class2A ALL ENDS A
Maximum Operating Temp250.0 FAHRENHEIT SECOND RESPONSE DEGF
Connection StyleFLARED (TUBE) FIRST END
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
2530-00-459-2609H546739 INTERCHANGEABLE
Track Assembly
Case J I Co
5950-00-998-4256546739 INTERCHANGEABLE
Reactor
Cae Usa Inc.
4730-01-499-1626546739 INTERCHANGEABLE
Adapter,straight,tube to Boss
Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney
4730-01-656-91116-8F50X-SS INTERCHANGEABLE
Coupling,pipe
Parker-Hannifin Corporation Div Gas Turbine Fuel Systems
Cross-Reference Index
Part NumberManufacturer
16325FX Oshkosh Defense Llc (USA)
6-8F5BXSS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
6-8F50XSS Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
272MS178P001 Raytheon Company Dba Raytheon Co (USA)
6-8F5BXSS Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
6-8F5XSS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
6-8F5BXSS Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
16325FX Oshkosh Corp (USA)
546739 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
6-8 070120SA Society of Automotive Engineers Inc (USA)
MIL-DTL-18866 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6-8F50XSS Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
546739 Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
6-8F5XSS Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
MS51525A6-8S Bae Systems Tactical Vehicle Systems Lp Dba Data Systems International Inc (USA)
6-8F50XSS Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
MS51525A6-8S Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
J514 Society of Automotive Engineers Inc (USA)
MIL-F-18866G Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
J514 Sae International Dba Sae International (USA)
Related Parts
2530-00-459-2609INTERCHANGEABLE
TRACK ASSEMBLY
H546739
5950-00-998-4256INTERCHANGEABLE
REACTOR
546739
4730-01-499-1626INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
546739
4730-01-656-9111INTERCHANGEABLE
COUPLING,PIPE
6-8F50X-SS

Frequently Asked Questions

What is NSN 4730-00-051-5209?

NSN 4730-00-051-5209 is a Adapter,straight,tube to Boss, manufactured by Oshkosh Defense Llc, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-051-5209?

NSN 4730-00-051-5209 has 21 cross-referenced part numbers: 16325FX (Oshkosh Defense Llc), 6-8F5BXSS (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), 6-8F50XSS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), 272MS178P001 (Raytheon Company Dba Raytheon Co), 6-8F5BXSS (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division) and 16 more.

What NSN replaces 4730-00-051-5209?

There are 4 known substitutes for 4730-00-051-5209: 2530-00-459-2609, 5950-00-998-4256, 4730-01-499-1626 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 16325FX?

Key specifications for 16325FX: Surface Treatment: PASSIVATE OVERALL; Nominal Overall Length: 1.375 INCHES IN; Media for Which Designed: AIR SECOND RESPONSE; Seat Angle: 37.0 DEGREES FIRST END. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-051-5209 still in active supply?

NSN 4730-00-051-5209 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.
PartsTable Design LLC · partstable.com