PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4133Microphone Element

B-K Medical Systems, Inc. · NSN 5965-00-232-1925 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-00-232-1925 — this item is cataloged by the U.S. Government under National Stock Number 5965-00-232-1925. Primary manufacturer part number: 4133.
Features
  • Microphone Element — FSC 5965
  • Frequency Response Range in Hertz: +20.0 TO 40000.0
  • Terminal Type: SURFACE CONTACT
  • Height: 0.350 INCHES NOMINAL IN
  • Sound Pickup Directional Type: OMNIDIRECTIONAL
  • Polarity Connection: NOT REQUIRED
  • Diameter: 0.500 INCHES NOMINAL IN
  • Impedance Rating: 20.0 PICOFARADS NOMINAL
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microphone Element, cataloged under National Stock Number 5965-00-232-1925, 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 B-K Medical Systems, Inc.. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5965-00-232-1925
Primary Part Number4133
Item NameMicrophone Element
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerB-K Medical Systems, Inc.
StatusACTIVE
Frequency Response Range in Hertz+20.0 TO 40000.0
Terminal TypeSURFACE CONTACT
Height0.350 INCHES NOMINAL IN
Sound Pickup Directional TypeOMNIDIRECTIONAL
Polarity ConnectionNOT REQUIRED
Diameter0.500 INCHES NOMINAL IN
Impedance Rating20.0 PICOFARADS NOMINAL
Element TypeCAPACITOR
Output Sensitivity Rating in Decibels-60.0
Output Sensitivity Rating Reference1 VOLT PER 100 MICROBARS
Body StyleROUND SHAPE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-17770103030069 INTERCHANGEABLE
Seat,valve
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
4920-00-110-23644133 INTERCHANGEABLE
Monitor,special
Magnetika Inc
5955-00-280-497341-33 INTERCHANGEABLE
Crystal Unit,quartz
Keysight Technologies Inc
3040-00-339-448621U1141PC4133 INTERCHANGEABLE
Lining,bearing Half
Naval Ship Systems Command
5305-00-349-81304133 INTERCHANGEABLE
Screw,pallet,clock
Wakmann Watch Company Inc
6250-00-494-0644 INTERCHANGEABLE
Lampholder
6532-01-083-43034133 INTERCHANGEABLE
Footwear Covers,operating Room
Precept Inc
7210-01-204-54374135 INTERCHANGEABLE
Washcloth
Johnson & Johnson Sales and Logistics Company Llc Div Sales and Logistics Company, Llc
5360-01-251-12074133 INTERCHANGEABLE
Spring,helical,compression
Hoyt Corporation
2920-01-258-93934133 INTERCHANGEABLE
Spark Plug
Honeywell International Inc Dba Honeywell Div Consumer Products Group
Cross-Reference Index
Part NumberManufacturer
4133 B-K Medical Systems, Inc. (USA)
4133 Gems Sensors & Controls (GBR)
Related Parts
4820-00-036-1777INTERCHANGEABLE
SEAT,VALVE
0103030069
4920-00-110-2364INTERCHANGEABLE
MONITOR,SPECIAL
4133
5955-00-280-4973INTERCHANGEABLE
CRYSTAL UNIT,QUARTZ
41-33
3040-00-339-4486INTERCHANGEABLE
LINING,BEARING HALF
21U1141PC4133
5305-00-349-8130INTERCHANGEABLE
SCREW,PALLET,CLOCK
4133
6250-00-494-0644INTERCHANGEABLE
LAMPHOLDER
6532-01-083-4303INTERCHANGEABLE
FOOTWEAR COVERS,OPERATING ROOM
4133
7210-01-204-5437INTERCHANGEABLE
WASHCLOTH
4135
5360-01-251-1207INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4133
2920-01-258-9393INTERCHANGEABLE
SPARK PLUG
4133
5961-01-363-7049INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5315-01-669-5811INTERCHANGEABLE
PIN,QUICK RELEASE
4133

Frequently Asked Questions

What is NSN 5965-00-232-1925?

NSN 5965-00-232-1925 is a Microphone Element, manufactured by B-K Medical Systems, Inc., classified under FSC 5965 (No Item Name Available). Status: active.

What are the part numbers for NSN 5965-00-232-1925?

NSN 5965-00-232-1925 has 2 cross-referenced part numbers: 4133 (B-K Medical Systems, Inc.), 4133 (Gems Sensors & Controls).

What NSN replaces 5965-00-232-1925?

There are 12 known substitutes for 5965-00-232-1925: 4820-00-036-1777, 4920-00-110-2364, 5955-00-280-4973 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4133?

Key specifications for 4133: Frequency Response Range in Hertz: +20.0 TO 40000.0; Terminal Type: SURFACE CONTACT; Height: 0.350 INCHES NOMINAL IN; Sound Pickup Directional Type: OMNIDIRECTIONAL. 11 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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