PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20964Control,flow,cleane

L & R Manufacturing Company · NSN 6640-01-421-5506 · FSC 6640 · No Item Name Available
Verified by PartsTable
NSN 6640-01-421-5506 — this item is cataloged by the U.S. Government under National Stock Number 6640-01-421-5506. Primary manufacturer part number: 20964.
Features
  • Control,flow,cleane — FSC 6640
  • 3 verified cross-references
  • Primary manufacturer: L & R Manufacturing Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Control,flow,cleane, cataloged under National Stock Number 6640-01-421-5506, is classified within Federal Supply Class 6640 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is L & R Manufacturing Company. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6640-01-421-5506
Primary Part Number20964
Item NameControl,flow,cleane
FSC / FSG6640 / 66 — No Item Name Available
ManufacturerL & R Manufacturing Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
1650-00-698-6602 INTERCHANGEABLE
Sleeve,check Valve
5935-00-804-5267 INTERCHANGEABLE
Backshell,electrical Connector
4730-01-102-4892 INTERCHANGEABLE
Cap,tube
5950-01-369-082220964 INTERCHANGEABLE
Transformer,power
Robert M. Hadley Company, Inc.
Cross-Reference Index
Part NumberManufacturer
20964 PRIMARY L & R Manufacturing Company (USA)
LLH378088 Naval Medical Material Support Command Detachment (USA)
NAVY 1993 3113 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
Related Parts
1650-00-698-6602INTERCHANGEABLE
SLEEVE,CHECK VALVE
5935-00-804-5267INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
4730-01-102-4892INTERCHANGEABLE
CAP,TUBE
5950-01-369-0822INTERCHANGEABLE
TRANSFORMER,POWER
20964

Frequently Asked Questions

What is NSN 6640-01-421-5506?

NSN 6640-01-421-5506 is a Control,flow,cleane, manufactured by L & R Manufacturing Company, classified under FSC 6640 (No Item Name Available). Status: active.

What are the part numbers for NSN 6640-01-421-5506?

NSN 6640-01-421-5506 has 3 cross-referenced part numbers: 20964 (L & R Manufacturing Company), LLH378088 (Naval Medical Material Support Command Detachment), NAVY 1993 3113 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia).

What NSN replaces 6640-01-421-5506?

There are 4 known substitutes for 6640-01-421-5506: 1650-00-698-6602, 5935-00-804-5267, 4730-01-102-4892 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20964?

Key specifications for 20964: Part Name Assigned by Controlling Agency: CONTROL FLOW CLEANE. 1 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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