PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

334540P02Reducer,tube

Meggitt Defense Systems, Inc. Dba Meggitt Western Design · NSN 4730-00-811-9734 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-811-9734 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-811-9734. Primary manufacturer part number: 334540P02.
Features
  • Reducer,tube — FSC 4730
  • Nominal Outside Diameter Tube Accommodated: 0.625 INCHES FIRST END IN
  • Connection Type: UNTHREADED EXTERNAL TUBE SECOND END
  • Connection Style: PLAIN (TUBE) SECOND END
  • Nominal Overall Length: 1.562 INCHES IN
  • Reducer Type: CONCENTRIC
  • Connection Type: UNTHREADED INTERNAL TUBE FIRST END
  • Connection Style: SOCKET (TUBE) FIRST END
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
  • Applications requiring Copper Alloy Overall construction
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-811-9734, 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 Meggitt Defense Systems, Inc. Dba Meggitt Western Design. Government technical data includes 9 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-00-811-9734
Primary Part Number334540P02
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMeggitt Defense Systems, Inc. Dba Meggitt Western Design
StatusACTIVE
Nominal Outside Diameter Tube Accommodated0.625 INCHES FIRST END IN
Connection TypeUNTHREADED EXTERNAL TUBE SECOND END
Connection StylePLAIN (TUBE) SECOND END
Nominal Overall Length1.562 INCHES IN
Reducer TypeCONCENTRIC
Connection TypeUNTHREADED INTERNAL TUBE FIRST END
Connection StyleSOCKET (TUBE) FIRST END
Nominal Outside Diameter Tube Accommodated0.750 INCHES SECOND END IN
MaterialCOPPER ALLOY OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5998-00-167-9614900165-5 INTERCHANGEABLE
Circuit Card Assembly
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Cross-Reference Index
Part NumberManufacturer
334540P02 Meggitt Defense Systems, Inc. Dba Meggitt Western Design (USA)
W1035 Mueller Brass Co. (USA)
334540P02 Howden Fluid Systems (USA)
334540P02 Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA)
B16.22 The American Society of Mechanical Engineers (USA)
Related Parts
5998-00-167-9614INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
900165-5

Frequently Asked Questions

What is NSN 4730-00-811-9734?

NSN 4730-00-811-9734 is a Reducer,tube, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Western Design, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-811-9734?

NSN 4730-00-811-9734 has 5 cross-referenced part numbers: 334540P02 (Meggitt Defense Systems, Inc. Dba Meggitt Western Design), W1035 (Mueller Brass Co.), 334540P02 (Howden Fluid Systems), 334540P02 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc), B16.22 (The American Society of Mechanical Engineers).

What NSN replaces 4730-00-811-9734?

There is 1 known substitute for 4730-00-811-9734: 5998-00-167-9614. Verify interchangeability with system specifications before substitution.

What are the specifications of 334540P02?

Key specifications for 334540P02: Nominal Outside Diameter Tube Accommodated: 0.625 INCHES FIRST END IN; Connection Type: UNTHREADED EXTERNAL TUBE SECOND END; Connection Style: PLAIN (TUBE) SECOND END; Nominal Overall Length: 1.562 INCHES IN. 9 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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