PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

226344Reducer,tube

Precision Speed Manufacturing, Llc · NSN 4730-00-595-0172 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-595-0172 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-595-0172. Primary manufacturer part number: 226344.
Features
  • Reducer,tube — FSC 4730
  • Thread Series Designator: UNF SECOND END
  • Thread Class: 3A SECOND END A
  • Connection Type: THREADED EXTERNAL TUBE SECOND END
  • Reducer Type: CONCENTRIC
  • Nominal Outside Diameter Tube Accommodated: 0.297 INCHES SECOND END IN
  • Nominal Thread Size: 0.750 INCHES FIRST END IN
  • Thread Quantity Per Inch: 16 FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Aluminum Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-595-0172, 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 Precision Speed Manufacturing, Llc. Government technical data includes 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 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
NSN4730-00-595-0172
Primary Part Number226344
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerPrecision Speed Manufacturing, Llc
StatusACTIVE
Thread Series DesignatorUNF SECOND END
Thread Class3A SECOND END A
Connection TypeTHREADED EXTERNAL TUBE SECOND END
Reducer TypeCONCENTRIC
Nominal Outside Diameter Tube Accommodated0.297 INCHES SECOND END IN
Nominal Thread Size0.750 INCHES FIRST END IN
Thread Quantity Per Inch16 FIRST END
Material Document and ClassificationAMS 4118 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Thread Series DesignatorUNS FIRST END
Connection StyleINVERTED FLARE (TUBE) SECOND END
Seat Angle65.0 DEGREES FIRST END
MaterialALUMINUM OVERALL
Thread Class2A FIRST END A
Nominal Overall Length1.380 INCHES IN
Nominal Thread Size0.562 INCHES SECOND END IN
Surface TreatmentANODIZE INSIDE
Surface TreatmentANODIZE OUTSIDE
Connection TypeTHREADED EXTERNAL TUBE FIRST END
Seat Angle30.0 DEGREES SECOND END
Nominal Outside Diameter Tube Accommodated0.374 INCHES FIRST END IN
Connection StyleINVERTED FLARE (TUBE) FIRST END
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3110-01-128-9020226344 INTERCHANGEABLE
Retainer,ball,bearing
Eaton Aerospace, Llc Dba Jackson South
5331-01-181-0821 INTERCHANGEABLE
O-Ring
4730-01-669-4815 INTERCHANGEABLE
Reducer,tube
Cross-Reference Index
Part NumberManufacturer
226344 Turbo Power & Marine System Inc Sub of United Technologies Corp (USA)
226344 PRIMARY Precision Speed Manufacturing, Llc (USA)
226344 Crown Fitting Co Inc (USA)
226344 Simon Paul Boiler and Welding Co (USA)
226344 Cooper Industries Inc Cooper Petroleum Equipment Div Sunnyvale Operation (USA)
226344 PRIMARY Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA)
226344 Alliant Techsystems Inc (USA)
Related Parts
3110-01-128-9020INTERCHANGEABLE
RETAINER,BALL,BEARING
226344
5331-01-181-0821INTERCHANGEABLE
O-RING
4730-01-669-4815INTERCHANGEABLE
REDUCER,TUBE

Frequently Asked Questions

What is NSN 4730-00-595-0172?

NSN 4730-00-595-0172 is a Reducer,tube, manufactured by Precision Speed Manufacturing, Llc, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-595-0172?

NSN 4730-00-595-0172 has 7 cross-referenced part numbers: 226344 (Turbo Power & Marine System Inc Sub of United Technologies Corp), 226344 (Precision Speed Manufacturing, Llc), 226344 (Crown Fitting Co Inc), 226344 (Simon Paul Boiler and Welding Co), 226344 (Cooper Industries Inc Cooper Petroleum Equipment Div Sunnyvale Operation) and 2 more.

What NSN replaces 4730-00-595-0172?

There are 3 known substitutes for 4730-00-595-0172: 3110-01-128-9020, 5331-01-181-0821, 4730-01-669-4815. Verify interchangeability with system specifications before substitution.

What are the specifications of 226344?

Key specifications for 226344: Thread Series Designator: UNF SECOND END; Thread Class: 3A SECOND END A; Connection Type: THREADED EXTERNAL TUBE SECOND END; Reducer Type: CONCENTRIC. 21 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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