PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M-511C ACContr Unit Whistle

Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc · NSN 6645-01-564-0569 · FSC 6645 · No Item Name Available
Verified by PartsTable
NSN 6645-01-564-0569 — this item is cataloged by the U.S. Government under National Stock Number 6645-01-564-0569. Primary manufacturer part number: M-511C AC.
Features
  • Contr Unit Whistle — FSC 6645
  • 5 verified cross-references
  • Primary manufacturer: Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Contr Unit Whistle, cataloged under National Stock Number 6645-01-564-0569, is classified within Federal Supply Class 6645 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc. This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6645-01-564-0569
Primary Part NumberM-511C AC
Item NameContr Unit Whistle
FSC / FSG6645 / 66 — No Item Name Available
ManufacturerKahlenberg Industries, Inc. Dba Kahlenberg Industries Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
4820-00-224-7483M2684 INTERCHANGEABLE
Valve,globe
Gardner Denver Inc.
5905-01-143-4987RHS7R0 INTERCHANGEABLE
Resistor,variable,wire Wound,non
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5805-01-422-5920 INTERCHANGEABLE
Modification Kit,telephone Equip
Cross-Reference Index
Part NumberManufacturer
438-8433844 ITEM 25 Naval Sea Systems Command (USA)
M-511C AC PRIMARY Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA)
3-6431 / P/N-M-511C Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA)
M-511C PRIMARY Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA)
M-522 PRIMARY Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc (USA)
Related Parts
4820-00-224-7483INTERCHANGEABLE
VALVE,GLOBE
M2684
5905-01-143-4987INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,NON
RHS7R0
5805-01-422-5920INTERCHANGEABLE
MODIFICATION KIT,TELEPHONE EQUIP

Frequently Asked Questions

What is NSN 6645-01-564-0569?

NSN 6645-01-564-0569 is a Contr Unit Whistle, manufactured by Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc, classified under FSC 6645 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6645-01-564-0569?

NSN 6645-01-564-0569 has 5 cross-referenced part numbers: 438-8433844 ITEM 25 (Naval Sea Systems Command), M-511C AC (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc), 3-6431 / P/N-M-511C (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc), M-511C (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc), M-522 (Kahlenberg Industries, Inc. Dba Kahlenberg Industries Inc).

What NSN replaces 6645-01-564-0569?

There are 3 known substitutes for 6645-01-564-0569: 4820-00-224-7483, 5905-01-143-4987, 5805-01-422-5920. Verify interchangeability with system specifications before substitution.

What are the specifications of M-511C AC?

Key specifications for M-511C AC: End Item Identification: CONTROLLER, WHISTLE; LOGISTICS SUPPORT VESSEL. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6645-01-564-0569 still in active supply?

NSN 6645-01-564-0569 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.
PartsTable Design LLC · partstable.com