PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

AD26Adapter,straight,pipe to Tube

Illinois Tool Works Inc. · NSN 4730-00-455-3785 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-455-3785 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-455-3785. Primary manufacturer part number: AD26.
Features
  • Adapter,straight,pipe to Tube — FSC 4730
  • Thread Series Designator: NPT SECOND END
  • Thread Quantity Per Inch: 18 FIRST END
  • Nominal Thread Size: 0.375 INCHES SECOND END IN
  • Thread Series Designator: UNS FIRST END
  • Seat Angle: 37.0 DEGREES FIRST END
  • Connection Type: THREADED EXTERNAL TUBE FIRST END
  • Material: STEEL OVERALL
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 4730-00-455-3785, 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 Illinois Tool Works Inc.. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-455-3785
Primary Part NumberAD26
Item NameAdapter,straight,pipe to Tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerIllinois Tool Works Inc.
StatusACTIVE
Thread Series DesignatorNPT SECOND END
Thread Quantity Per Inch18 FIRST END
Nominal Thread Size0.375 INCHES SECOND END IN
Thread Series DesignatorUNS FIRST END
Seat Angle37.0 DEGREES FIRST END
Connection TypeTHREADED EXTERNAL TUBE FIRST END
MaterialSTEEL OVERALL
Nominal Thread Size0.500 INCHES FIRST END IN
Thread Class2A FIRST END A
Nominal Outside Diameter Tube Accommodated0.312 INCHES FIRST END IN
Connection TypeTHREADED EXTERNAL PIPE SECOND END
Connection StylePLAIN (PIPE) SECOND END
Connection StyleINVERTED FLARE (TUBE) FIRST END
Nominal Overall Length1.500 INCHES IN
Nominal Pipe Size Accommodated0.375 INCHES SECOND END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5935-01-052-917270-307 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Se Relays Llc (magnecraft) Div Se Relays Llc (magnecraft)
Cross-Reference Index
Part NumberManufacturer
AD26 PRIMARY Illinois Tool Works Inc. (USA)
Related Parts
5935-01-052-9172INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
70-307

Frequently Asked Questions

What is NSN 4730-00-455-3785?

NSN 4730-00-455-3785 is a Adapter,straight,pipe to Tube, manufactured by Illinois Tool Works Inc., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-455-3785?

NSN 4730-00-455-3785 has 1 cross-referenced part number: AD26 (Illinois Tool Works Inc.).

What NSN replaces 4730-00-455-3785?

There is 1 known substitute for 4730-00-455-3785: 5935-01-052-9172. Verify interchangeability with system specifications before substitution.

What are the specifications of AD26?

Key specifications for AD26: Thread Series Designator: NPT SECOND END; Thread Quantity Per Inch: 18 FIRST END; Nominal Thread Size: 0.375 INCHES SECOND END IN; Thread Series Designator: UNS FIRST END. 15 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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