PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST7M199T6Adapter,straight,tube to Boss

The Boeing Company Div Defense · NSN 4730-00-427-0202 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-427-0202 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-427-0202. Primary manufacturer part number: ST7M199T6.
Features
  • Adapter,straight,tube to Boss — FSC 4730
  • Criticality Code Justification: FEAT
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
  • Material: STEEL CORROSION RESISTING LOCK RING
  • Seat Angle: 37.0 DEGREES FIRST END
  • Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE LOCK RING
  • Surface Treatment: PASSIVATE LOCK RING
  • Material Document and Classification: AMS4965 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967,130 KSI UTS MIN ASSN STD SINGLE MATERIAL RESPONSE BODY
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Corrosion Resisting Lock Ring construction
General Description

The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-00-427-0202, 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 The Boeing Company Div Defense. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 13 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4730-00-427-0202
Primary Part NumberST7M199T6
Item NameAdapter,straight,tube to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusCANCELLED
Criticality Code JustificationFEAT
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS
MaterialSTEEL CORROSION RESISTING LOCK RING
Seat Angle37.0 DEGREES FIRST END
Surface Treatment Document and ClassificationQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE LOCK RING
Surface TreatmentPASSIVATE LOCK RING
Material Document and ClassificationAMS4965 ASSN STD SINGLE MATERIAL RESPONSE OR AMS4967,130 KSI UTS MIN ASSN STD SINGLE MATERIAL RESPONSE BODY
Nominal Overall Length1.262 INCHES IN
Nominal Thread Size0.562 INCHES FIRST END IN
Connection StyleFLARED (TUBE) FIRST END
Furnished Items and Quantity1 LOCK RING
Connection TypeTHREADED EXTERNAL TUBE FIRST END
MaterialTITANIUM ALLOY UNS R54520 BODY
Connection TypeTHREADED EXTERNAL BOSS SECOND END
Nominal Thread Size0.438 INCHES SECOND END IN
Material Document and ClassificationAMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5734,34-40HRC ASSN STD SINGLE MATERIAL RESPONSE LOCK RING
Connection StyleEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
Thread Class3A ALL ENDS A
Media for Which DesignedHYDRAULIC FLUID SINGLE RESPONSE
Operating Pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Maximum Operating Temp132.0 CELSIUS SINGLE RESPONSE DEGC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
4730-00-358-6004ST-2101-062 INTERCHANGEABLE
Adapter,straight,tube to Boss
Sps Technologies, Llc Dba Airdrome Precision Components
6610-00-864-4730 INTERCHANGEABLE
Indicator,position
Cross-Reference Index
Part NumberManufacturer
ST7M199T6 PRIMARY The Boeing Company Div Defense (USA)
9806-13 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
ST7M199 The Boeing Company Div Defense (USA)
STM199T6 The Boeing Company Div Defense (USA)
RF9806-13 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
ST2101-062 Cooper Industries Inc Cooper Petroleum Equipment Div Sunnyvale Operation (USA)
RF9806-11 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
AS1985-06 Howmet Global Fastening Systems Inc Div Rosan / Eagle Products (USA)
RF9806-13 Howmet Global Fastening Systems Inc Div Rosan / Eagle Products (USA)
104-536-9105 Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
ST2101-062 Titan Corp the (USA)
AS1985-06 Howmet Global Fastening Systems Inc Div Rosan Products (USA)
652940 Royal Oak Gage, Inc (USA)
Related Parts
4730-00-358-6004INTERCHANGEABLE
ADAPTER,STRAIGHT,TUBE TO BOSS
ST-2101-062
6610-00-864-4730INTERCHANGEABLE
INDICATOR,POSITION

Frequently Asked Questions

What is NSN 4730-00-427-0202?

NSN 4730-00-427-0202 is a Adapter,straight,tube to Boss, manufactured by The Boeing Company Div Defense, classified under FSC 4730 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4730-00-427-0202?

NSN 4730-00-427-0202 has 13 cross-referenced part numbers: ST7M199T6 (The Boeing Company Div Defense), 9806-13 (Howmet Global Fastening Systems Inc Div Rosan Products), ST7M199 (The Boeing Company Div Defense), STM199T6 (The Boeing Company Div Defense), RF9806-13 (Howmet Global Fastening Systems Inc Div Rosan Products) and 8 more.

What NSN replaces 4730-00-427-0202?

There are 2 known substitutes for 4730-00-427-0202: 4730-00-358-6004, 6610-00-864-4730. Verify interchangeability with system specifications before substitution.

What are the specifications of ST7M199T6?

Key specifications for ST7M199T6: Criticality Code Justification: FEAT; Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) ALL ENDS; Material: STEEL CORROSION RESISTING LOCK RING; Seat Angle: 37.0 DEGREES FIRST END. 24 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4730-00-427-0202 still in active supply?

NSN 4730-00-427-0202 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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