PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RB-647Riser,condensate Return

Aerco International, Inc. Dba Aerco International Inc · NSN 4420-01-179-6405 · FSC 4420 · No Item Name Available
Verified by PartsTable
NSN 4420-01-179-6405 — this item is cataloged by the U.S. Government under National Stock Number 4420-01-179-6405. Primary manufacturer part number: RB-647.
Features
  • Riser,condensate Return — FSC 4420
  • General Characteristics Item Description: 33.375 IN. LG; THREADED EXTERNALLY 1-11-1/2 NPT; 5 HOLES DRILLED 0.812 IN IN
  • 2 verified cross-references
  • Primary manufacturer: Aerco International, Inc. Dba Aerco International Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Riser,condensate Return, cataloged under National Stock Number 4420-01-179-6405, is classified within Federal Supply Class 4420 (No Item Name Available) of the Furnace, Steam, Drying, Nuclear Reactors group. The primary manufacturer of record is Aerco International, Inc. Dba Aerco International Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4420-01-179-6405
Primary Part NumberRB-647
Item NameRiser,condensate Return
FSC / FSG4420 / 44 — No Item Name Available
ManufacturerAerco International, Inc. Dba Aerco International Inc
StatusCANCELLED
General Characteristics Item Description33.375 IN. LG; THREADED EXTERNALLY 1-11-1/2 NPT; 5 HOLES DRILLED 0.812 IN IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
4320-00-035-7239AONI-183 INTERCHANGEABLE
Ring,lantern
M.t. Davidson Company
5940-00-208-0668647 INTERCHANGEABLE
Terminal,lug
Zierick Mfg Corp
2590-00-414-56199102036 INTERCHANGEABLE
Cap,filler Opening
Sicard a Division of Smi-Snowblast Inc Dba Sicard
5935-01-010-7618 INTERCHANGEABLE
Connector,receptacle,electrical
6680-01-164-6859 INTERCHANGEABLE
Indicator,sight,liquid
3940-01-198-7404647 INTERCHANGEABLE
Spindle,reel Stand
Greenlee Textron Inc.
5330-01-226-9514 INTERCHANGEABLE
Gasket
5330-01-226-9723647,IT.5 INTERCHANGEABLE
Gasket,cushion
Clark-Reliance Llc Dba Jacoby-Tarbox
6645-01-342-9415 INTERCHANGEABLE
Generator,time Code
5940-01-485-8992RB647 INTERCHANGEABLE
Terminal,lug
Abb Installation Products Inc
Cross-Reference Index
Part NumberManufacturer
RB-647 PRIMARY Aerco International, Inc. Dba Aerco International Inc (USA)
647 PRIMARY Aerco International, Inc. Dba Aerco International Inc (USA)
Related Parts
4320-00-035-7239INTERCHANGEABLE
RING,LANTERN
AONI-183
5940-00-208-0668INTERCHANGEABLE
TERMINAL,LUG
647
2590-00-414-5619INTERCHANGEABLE
CAP,FILLER OPENING
9102036
5935-01-010-7618INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
6680-01-164-6859INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
3940-01-198-7404INTERCHANGEABLE
SPINDLE,REEL STAND
647
5330-01-226-9514INTERCHANGEABLE
GASKET
5330-01-226-9723INTERCHANGEABLE
GASKET,CUSHION
647,IT.5
6645-01-342-9415INTERCHANGEABLE
GENERATOR,TIME CODE
5940-01-485-8992INTERCHANGEABLE
TERMINAL,LUG
RB647
5985-01-643-9252INTERCHANGEABLE
WAVEGUIDE
647
5985-01-718-9387INTERCHANGEABLE
ANTENNA
647

Frequently Asked Questions

What is NSN 4420-01-179-6405?

NSN 4420-01-179-6405 is a Riser,condensate Return, manufactured by Aerco International, Inc. Dba Aerco International Inc, classified under FSC 4420 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4420-01-179-6405?

NSN 4420-01-179-6405 has 2 cross-referenced part numbers: RB-647 (Aerco International, Inc. Dba Aerco International Inc), 647 (Aerco International, Inc. Dba Aerco International Inc).

What NSN replaces 4420-01-179-6405?

There are 12 known substitutes for 4420-01-179-6405: 4320-00-035-7239, 5940-00-208-0668, 2590-00-414-5619 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RB-647?

Key specifications for RB-647: End Item Identification: AERCO HELITHERM HEAT EXCHANGER MODEL SW1B07; General Characteristics Item Description: 33.375 IN. LG; THREADED EXTERNALLY 1-11-1/2 NPT; 5 HOLES DRILLED 0.812 IN IN. 2 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4420-01-179-6405 still in active supply?

NSN 4420-01-179-6405 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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