PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8-6TRBTX-SReducer,tube

Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division · NSN 4730-00-010-2774 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-010-2774 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-010-2774. Primary manufacturer part number: 8-6TRBTX-S.
Features
  • Reducer,tube — FSC 4730
  • Thread Class: 2A SECOND END A
  • Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
  • Thread Class: 2B FIRST END
  • Reducer Type: CONCENTRIC
  • Material: STEEL OVERALL
  • Seat Angle: 37.0 DEGREES SECOND END
  • Nominal Thread Size: 0.562 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-010-2774, 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 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 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
NSN4730-00-010-2774
Primary Part Number8-6TRBTX-S
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
StatusACTIVE
Thread Class2A SECOND END A
Connection StyleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
Thread Class2B FIRST END
Reducer TypeCONCENTRIC
MaterialSTEEL OVERALL
Seat Angle37.0 DEGREES SECOND END
Nominal Thread Size0.562 INCHES SECOND END IN
Surface TreatmentCADMIUM OR ZINC OVERALL
Thread Series DesignatorUNF FIRST END
Thread Series DesignatorUNF SECOND END
Seat Angle37.0 DEGREES FIRST END
Nominal Overall Length1.000 INCHES IN
Nominal Thread Size0.750 INCHES FIRST END IN
Material Document and Classification66,COMP 12L14 FED STD SINGLE MATERIAL RESPONSE OVERALL
Nominal Outside Diameter Tube Accommodated0.375 INCHES SECOND END IN
Connection StyleFLARED (TUBE) SECOND END
Nominal Outside Diameter Tube Accommodated0.500 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5331-00-263-80282200-794187PC14 INTERCHANGEABLE
O-Ring
Naval Ship Systems Command
4730-00-786-2247 INTERCHANGEABLE
Reducer,tube
Cross-Reference Index
Part NumberManufacturer
8-6TRBTX-S Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division (USA)
9K3 Clark Equipment Co (USA)
8-6TRBTX-S PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
8-6TRTXBSPL Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters (USA)
301-0256 Harsco Corp Bmy-Combat Systems Div (USA)
Related Parts
5331-00-263-8028INTERCHANGEABLE
O-RING
2200-794187PC14
4730-00-786-2247INTERCHANGEABLE
REDUCER,TUBE

Frequently Asked Questions

What is NSN 4730-00-010-2774?

NSN 4730-00-010-2774 is a Reducer,tube, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-010-2774?

NSN 4730-00-010-2774 has 5 cross-referenced part numbers: 8-6TRBTX-S (Parker Hannifin Corp Dba Pneutronics Div Stratoflex Products Division), 9K3 (Clark Equipment Co), 8-6TRBTX-S (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), 8-6TRTXBSPL (Parker-Hannifin Corporation Dba Pneutronics Div Corporate Headquarters), 301-0256 (Harsco Corp Bmy-Combat Systems Div).

What NSN replaces 4730-00-010-2774?

There are 2 known substitutes for 4730-00-010-2774: 5331-00-263-8028, 4730-00-786-2247. Verify interchangeability with system specifications before substitution.

What are the specifications of 8-6TRBTX-S?

Key specifications for 8-6TRBTX-S: Thread Class: 2A SECOND END A; Connection Style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END; Thread Class: 2B FIRST END; Reducer Type: CONCENTRIC. 17 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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