PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25391Adapter,straight,tube to Boss

Curtiss-Wright Controls Integrated Sensing, Inc. · NSN 4730-01-086-9954 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-086-9954 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-086-9954. Primary manufacturer part number: 25391.
Features
  • Adapter,straight,tube to Boss — FSC 4730
  • Thread Class: 3A FIRST END A
  • Nominal Thread Size: 0.438 INCHES FIRST END IN
  • Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN
  • Seat Angle: 12.0 DEGREES FIRST END
  • Connection Style: FLARELESS (TUBE) FIRST END
  • Thread Series Designator: UNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
  • Nominal Thread Size: 0.438 INCHES SECOND END IN
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Plastic Overall construction
General Description

The Adapter,straight,tube to Boss, cataloged under National Stock Number 4730-01-086-9954, 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 Curtiss-Wright Controls Integrated Sensing, Inc.. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-086-9954
Primary Part Number25391
Item NameAdapter,straight,tube to Boss
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerCurtiss-Wright Controls Integrated Sensing, Inc.
StatusACTIVE
Thread Class3A FIRST END A
Nominal Thread Size0.438 INCHES FIRST END IN
Nominal Outside Diameter Tube Accommodated0.250 INCHES FIRST END IN
Seat Angle12.0 DEGREES FIRST END
Connection StyleFLARELESS (TUBE) FIRST END
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) FIRST END
Nominal Thread Size0.438 INCHES SECOND END IN
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Thread Class3B SECOND END
Nominal Overall Length1.250 INCHES IN
Thread Series DesignatorUNIFIED NATIONAL JOINT FINE (UNJF) SECOND END
Connection StyleGASKET SEAL (BOSS) SECOND END
Connection TypeTHREADED INTERNAL BOSS SECOND END
MaterialPLASTIC OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6850-00-515-225125300 INTERCHANGEABLE
Sealer,chemical
Rectorseal Corp the
5330-01-264-0134209029 INTERCHANGEABLE
Seal,plain Encased
Eaton Corporation Dba Eaton Inoac
5305-01-698-225225391 INTERCHANGEABLE
Setscrew
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
50-012 Bell Textron Inc (USA)
25391 PRIMARY Curtiss-Wright Controls Integrated Sensing, Inc. (USA)
AP2684 PRIMARY Sps Technologies, Llc Dba Airdrome Precision Components (USA)
50-012-20N400 Bell Textron Inc (USA)
Related Parts
6850-00-515-2251INTERCHANGEABLE
SEALER,CHEMICAL
25300
5330-01-264-0134INTERCHANGEABLE
SEAL,PLAIN ENCASED
209029
5305-01-698-2252INTERCHANGEABLE
SETSCREW
25391

Frequently Asked Questions

What is NSN 4730-01-086-9954?

NSN 4730-01-086-9954 is a Adapter,straight,tube to Boss, manufactured by Curtiss-Wright Controls Integrated Sensing, Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-086-9954?

NSN 4730-01-086-9954 has 4 cross-referenced part numbers: 50-012 (Bell Textron Inc), 25391 (Curtiss-Wright Controls Integrated Sensing, Inc.), AP2684 (Sps Technologies, Llc Dba Airdrome Precision Components), 50-012-20N400 (Bell Textron Inc).

What NSN replaces 4730-01-086-9954?

There are 3 known substitutes for 4730-01-086-9954: 6850-00-515-2251, 5330-01-264-0134, 5305-01-698-2252. Verify interchangeability with system specifications before substitution.

What are the specifications of 25391?

Key specifications for 25391: Thread Class: 3A FIRST END A; Nominal Thread Size: 0.438 INCHES FIRST END IN; Nominal Outside Diameter Tube Accommodated: 0.250 INCHES FIRST END IN; Seat Angle: 12.0 DEGREES FIRST 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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