PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

R5-2Coupling

Kearfott Corporation Div Guidance and Navigation Division · NSN 6610-00-343-5618 · FSC 6610 · No Item Name Available
Verified by PartsTable
NSN 6610-00-343-5618 — this item is cataloged by the U.S. Government under National Stock Number 6610-00-343-5618. Primary manufacturer part number: R5-2.
Features
  • Coupling — FSC 6610
  • 5 verified cross-references
  • Primary manufacturer: Kearfott Corporation Div Guidance and Navigation Division
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupling, cataloged under National Stock Number 6610-00-343-5618, is classified within Federal Supply Class 6610 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Kearfott Corporation Div Guidance and Navigation Division. This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCoupling
FSC / FSG6610 — No Item Name Available (FSG 66)
ManufacturersRobertshaw Tennessee/cookeville Automotive (CAGE 80439); Phaostron Instrument and Electronic Company (CAGE 77221); Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems (CAGE 81100); Lockheed Martin Corporation Div Rms - Mitchel Field (CAGE 56232); Kearfott Corporation Div Guidance and Navigation Division (CAGE 88818)
Technical Specifications
ParameterValue
NSN6610-00-343-5618
Primary Part NumberR5-2
Item NameCoupling
FSC / FSG6610 / 66 — No Item Name Available
ManufacturerKearfott Corporation Div Guidance and Navigation Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4730-00-289-1739CR226-5 INTERCHANGEABLE
Sleeve,compression,tube-Hose Fit
Curtis-Toledo, Inc.
4820-00-664-6655 INTERCHANGEABLE
Valve,regulating,fluid Pressure
5330-00-872-6428 INTERCHANGEABLE
Seal,oil
3455-01-044-6358 INTERCHANGEABLE
Cutter,milling,end
6230-01-102-6534PR-125T/B INTERCHANGEABLE
Light,extension
Spectronics Corporation
5120-01-109-7631 INTERCHANGEABLE
Socket,socket Wrench
Cross-Reference Index
Part NumberManufacturer
X123820-2 Robertshaw Tennessee/cookeville Automotive (USA)
PAJ0014-2 Phaostron Instrument and Electronic Company (USA)
R5-2 Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems (USA)
1784223-2 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
R5-2 PRIMARY Kearfott Corporation Div Guidance and Navigation Division (USA)
Related Parts
4730-00-289-1739INTERCHANGEABLE
SLEEVE,COMPRESSION,TUBE-HOSE FIT
CR226-5
4820-00-664-6655INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
5330-00-872-6428INTERCHANGEABLE
SEAL,OIL
3455-01-044-6358INTERCHANGEABLE
CUTTER,MILLING,END
6230-01-102-6534INTERCHANGEABLE
LIGHT,EXTENSION
PR-125T/B
5120-01-109-7631INTERCHANGEABLE
SOCKET,SOCKET WRENCH

Frequently Asked Questions

What is NSN 6610-00-343-5618?

NSN 6610-00-343-5618 is a Coupling, manufactured by Kearfott Corporation Div Guidance and Navigation Division, classified under FSC 6610 (No Item Name Available). Status: active.

What are the part numbers for NSN 6610-00-343-5618?

NSN 6610-00-343-5618 has 5 cross-referenced part numbers: X123820-2 (Robertshaw Tennessee/cookeville Automotive), PAJ0014-2 (Phaostron Instrument and Electronic Company), R5-2 (Bae Systems Information and Electronic Systems Integration I Dba Es Marine Systems), 1784223-2 (Lockheed Martin Corporation Div Rms - Mitchel Field), R5-2 (Kearfott Corporation Div Guidance and Navigation Division).

What NSN replaces 6610-00-343-5618?

There are 6 known substitutes for 6610-00-343-5618: 4730-00-289-1739, 4820-00-664-6655, 5330-00-872-6428 and 3 more. Verify interchangeability with system specifications before substitution.

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