PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A8428Reducer,tube

Mueller Brass Co. · NSN 4730-00-511-7999 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-511-7999 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-511-7999. Primary manufacturer part number: A8428.
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 4730-00-511-7999, 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. 2 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
NSN4730-00-511-7999
Primary Part NumberA8428
Item NameReducer,tube
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-452-5270A8428 INTERCHANGEABLE
Washer,flat
Page Aerospace Limited
5905-00-701-3496115667-000 INTERCHANGEABLE
Resistor,thermal
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
Cross-Reference Index
Part NumberManufacturer
A8428 PRIMARY Mueller Brass Co. (USA)
Related Parts
5310-00-452-5270INTERCHANGEABLE
WASHER,FLAT
A8428
5905-00-701-3496INTERCHANGEABLE
RESISTOR,THERMAL
115667-000

Frequently Asked Questions

What is NSN 4730-00-511-7999?

NSN 4730-00-511-7999 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 4730-00-511-7999?

NSN 4730-00-511-7999 has 1 cross-referenced part number: A8428 (Mueller Brass Co.).

What NSN replaces 4730-00-511-7999?

There are 2 known substitutes for 4730-00-511-7999: 5310-00-452-5270, 5905-00-701-3496. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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