PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21904Shell,microphone

Astrocom Electronics Inc · NSN 5965-00-404-0486 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-00-404-0486 — this item is cataloged by the U.S. Government under National Stock Number 5965-00-404-0486. Primary manufacturer part number: 21904.
Features
  • Shell,microphone — FSC 5965
  • General Characteristics Item Description: METAL SHELL WITH BLACK ENAMAL FINISH; 1.625 IN. DIAMETER; 0.875 IN. H; TWO WIRE CABLE HANGERS 2.687 IN. LG IN
  • 3 verified cross-references
  • Primary manufacturer: Astrocom Electronics Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shell,microphone, cataloged under National Stock Number 5965-00-404-0486, is classified within Federal Supply Class 5965 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Astrocom Electronics Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 3 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
NSN5965-00-404-0486
Primary Part Number21904
Item NameShell,microphone
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerAstrocom Electronics Inc
StatusCANCELLED
General Characteristics Item DescriptionMETAL SHELL WITH BLACK ENAMAL FINISH; 1.625 IN. DIAMETER; 0.875 IN. H; TWO WIRE CABLE HANGERS 2.687 IN. LG IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
7330-00-071-5429P69 INTERCHANGEABLE
Lid,plastic
Freund Container Div Div Berlin Packaging Llc
1650-00-083-404021904 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Mid-America Aerotech, Llc
5930-00-101-22982890907-1 INTERCHANGEABLE
Switch,thermostatic
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6630-00-222-3539102401 INTERCHANGEABLE
Testing Kit,petroleum
Petroleum Analyzer Co L.p
3020-00-269-968799121904 INTERCHANGEABLE
Gear,spur
Alfa Laval Inc
4330-00-478-657421904 INTERCHANGEABLE
Filter,special
Pall Aeropower Corp Sub of Pall Corp Mectron Industries Div
4130-00-654-6180 INTERCHANGEABLE
Fender,right Front
5310-00-741-137921-904 INTERCHANGEABLE
Nut,plain,octagon
Pdi Ground Support Systems, Inc.
5360-00-869-6540 INTERCHANGEABLE
Spring,helical,extension
6610-00-967-2994102401 INTERCHANGEABLE
Slip Ring Assy
Symetrics Industries, Llc Dba Extant Aerospace Div Symetrics Industries Dba Extant Aerospace
Cross-Reference Index
Part NumberManufacturer
10240 Astrocom Electronics Inc (USA)
21904 PRIMARY Astrocom Electronics Inc (USA)
10240-1 Astrocom Electronics Inc (USA)
Related Parts
7330-00-071-5429INTERCHANGEABLE
LID,PLASTIC
P69
1650-00-083-4040INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
21904
5930-00-101-2298INTERCHANGEABLE
SWITCH,THERMOSTATIC
2890907-1
6630-00-222-3539INTERCHANGEABLE
TESTING KIT,PETROLEUM
102401
3020-00-269-9687INTERCHANGEABLE
GEAR,SPUR
99121904
4330-00-478-6574INTERCHANGEABLE
FILTER,SPECIAL
21904
4130-00-654-6180INTERCHANGEABLE
FENDER,RIGHT FRONT
5310-00-741-1379INTERCHANGEABLE
NUT,PLAIN,OCTAGON
21-904
5360-00-869-6540INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
6610-00-967-2994INTERCHANGEABLE
SLIP RING ASSY
102401
5342-01-011-0229INTERCHANGEABLE
HANDLE,HANDWHEEL
21904
4810-01-049-3723INTERCHANGEABLE
PLUNGER,VALVE
21904

Frequently Asked Questions

What is NSN 5965-00-404-0486?

NSN 5965-00-404-0486 is a Shell,microphone, manufactured by Astrocom Electronics Inc, classified under FSC 5965 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5965-00-404-0486?

NSN 5965-00-404-0486 has 3 cross-referenced part numbers: 10240 (Astrocom Electronics Inc), 21904 (Astrocom Electronics Inc), 10240-1 (Astrocom Electronics Inc).

What NSN replaces 5965-00-404-0486?

There are 12 known substitutes for 5965-00-404-0486: 7330-00-071-5429, 1650-00-083-4040, 5930-00-101-2298 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21904?

Key specifications for 21904: General Characteristics Item Description: METAL SHELL WITH BLACK ENAMAL FINISH; 1.625 IN. DIAMETER; 0.875 IN. H; TWO WIRE CABLE HANGERS 2.687 IN. LG IN. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5965-00-404-0486 still in active supply?

NSN 5965-00-404-0486 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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