PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

6505-6-4Adapter,straight,pipe to Tube

Brennan Industries · NSN 4730-01-431-9228 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-431-9228 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-431-9228. Primary manufacturer part number: 6505-6-4.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Connection Type: THREADED INTERNAL TUBE FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.188 INCHES SECOND END IN
  • Nominal Thread Size: 0.250 INCHES SECOND END IN
  • Connection Type: THREADED EXTERNAL PIPE SECOND END
  • Material: STEEL OVERALL
  • Thread Series Designator: UNF FIRST END
  • Nominal Outside Diameter Tube Accommodated: 0.375 INCHES FIRST END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Steel Overall construction
General Description

The Adapter,straight,pipe to Tube, cataloged under National Stock Number 4730-01-431-9228, 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 Brennan Industries. Government technical data includes 14 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-431-9228
Primary Part Number6505-6-4
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerBrennan Industries
StatusACTIVE
Connection TypeTHREADED INTERNAL TUBE FIRST END
Nominal Outside Diameter Tube Accommodated0.188 INCHES SECOND END IN
Nominal Thread Size0.250 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
MaterialSTEEL OVERALL
Thread Series DesignatorUNF FIRST END
Nominal Outside Diameter Tube Accommodated0.375 INCHES FIRST END IN
Thread Class3B FIRST END
Seat Angle12.0 DEGREES FIRST END
Nominal Thread Size0.562 INCHES FIRST END IN
Nominal Overall Length1.590 INCHES IN
Thread Series DesignatorNPT SECOND END
Connection StyleSWIVEL NUT, FLARELESS (SWIVEL NUT ATTACHMENT METHOD OPTIONAL) (TUBE) FIRST END
Connection StylePLAIN (PIPE) SECOND END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4730-01-431-92306505-8-8 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Brennan Industries
4730-01-443-98226505-4-4 INTERCHANGEABLE
Adapter,straight,pipe to Tube
Brennan Industries
Cross-Reference Index
Part NumberManufacturer
6505-6-4 PRIMARY Brennan Industries (USA)
3070AS588 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
3070AS588-5 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
4730-01-431-9230INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
6505-8-8
4730-01-443-9822INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
6505-4-4

Frequently Asked Questions

What is NSN 4730-01-431-9228?

NSN 4730-01-431-9228 is a Adapter,straight,pipe to Tube, manufactured by Brennan Industries, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-431-9228?

NSN 4730-01-431-9228 has 3 cross-referenced part numbers: 6505-6-4 (Brennan Industries), 3070AS588 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 3070AS588-5 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 4730-01-431-9228?

There are 2 known substitutes for 4730-01-431-9228: 4730-01-431-9230, 4730-01-443-9822. Verify interchangeability with system specifications before substitution.

What are the specifications of 6505-6-4?

Key specifications for 6505-6-4: Connection Type: THREADED INTERNAL TUBE FIRST END; Nominal Outside Diameter Tube Accommodated: 0.188 INCHES SECOND END IN; Nominal Thread Size: 0.250 INCHES SECOND END IN; Connection Type: THREADED EXTERNAL PIPE SECOND END. 14 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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