PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A8539Reducer,tube

Mueller Brass Co. · NSN 4730-00-511-8003 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-511-8003 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-511-8003. Primary manufacturer part number: A8539.
Features
  • Reducer,tube — FSC 4730
  • 1 verified cross-reference
  • Primary manufacturer: Mueller Brass Co.
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Reducer,tube, cataloged under National Stock Number 4730-00-511-8003, 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 Mueller Brass Co.. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameReducer,tube
FSC / FSG4730 — No Item Name Available (FSG 47)
ManufacturersMueller Brass Co. (CAGE 41947)
Technical Specifications
ParameterValue
NSN4730-00-511-8003
Primary Part NumberA8539
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-121-9932 INTERCHANGEABLE
Resistor,fixed,composition
5930-00-447-9262544-8695-003 INTERCHANGEABLE
Switch Section,rotary
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5915-01-692-310113553984-9 INTERCHANGEABLE
Filter,radio Frequency Interfere
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
A8539 PRIMARY Mueller Brass Co. (USA)
Related Parts
5905-00-121-9932INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5930-00-447-9262INTERCHANGEABLE
SWITCH SECTION,ROTARY
544-8695-003
5915-01-692-3101INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
13553984-9

Frequently Asked Questions

What is NSN 4730-00-511-8003?

NSN 4730-00-511-8003 is a Reducer,tube, manufactured by Mueller Brass Co., classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-511-8003?

NSN 4730-00-511-8003 has 1 cross-referenced part number: A8539 (Mueller Brass Co.).

What NSN replaces 4730-00-511-8003?

There are 3 known substitutes for 4730-00-511-8003: 5905-00-121-9932, 5930-00-447-9262, 5915-01-692-3101. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com