PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4143Calibrator,audio Level

B-K Medical Systems, Inc. · NSN 6625-01-091-0771 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-091-0771 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-091-0771. Primary manufacturer part number: 4143.
Features
  • Calibrator,audio Level — FSC 6625
  • Indicator Type: METER
  • Functional Description: PRECISION LABORATORY CALIBRATION AND INVESTIGATION ON CONDENSER MICROPHONES
  • Furnished Items and Quantity: PREAMPLIFIER TYPE 2627, 1 IN. MICROPHONE TYPE 4160, 2 ELECTROSTATIC ACTUATORS, 3 COUPLERS IN
  • Reference Data and Literature: BRUEL-KLAER 1991 CATALOG
  • Mounting Method: BENCH
  • Calibration Accuracy Rating: PORM 0.005 DB RECIPROCITY CALIBRATION AND PORM 0.15 DB COMPARISON CALIBRATION DB
  • Indicator Type: METER
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Calibrator,audio Level, cataloged under National Stock Number 6625-01-091-0771, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is B-K Medical Systems, Inc.. Government technical data includes 12 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-091-0771
Primary Part Number4143
Item NameCalibrator,audio Level
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerB-K Medical Systems, Inc.
StatusACTIVE
Indicator TypeMETER
Functional DescriptionPRECISION LABORATORY CALIBRATION AND INVESTIGATION ON CONDENSER MICROPHONES
Furnished Items and QuantityPREAMPLIFIER TYPE 2627, 1 IN. MICROPHONE TYPE 4160, 2 ELECTROSTATIC ACTUATORS, 3 COUPLERS IN
Reference Data and LiteratureBRUEL-KLAER 1991 CATALOG
Mounting MethodBENCH
Calibration Accuracy RatingPORM 0.005 DB RECIPROCITY CALIBRATION AND PORM 0.15 DB COMPARISON CALIBRATION DB
Indicator TypeMETER
Functional DescriptionPRECISION LABORATORY CALIBRATION AND INVESTIGATION ON CONDENSER MICROPHONES
Furnished Items and QuantityPREAMPLIFIER TYPE 2627, 1 IN. MICROPHONE TYPE 4160, 2 ELECTROSTATIC ACTUATORS, 3 COUPLERS IN
Reference Data and LiteratureBRUEL-KLAER 1991 CATALOG
Mounting MethodBENCH
Calibration Accuracy RatingPORM 0.005 DB RECIPROCITY CALIBRATION AND PORM 0.15 DB COMPARISON CALIBRATION DB
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeG
Unit of IssueEA
SMR CodeLU
Weight156.0000 lbs
Cube1.5768 cu ft
Verified Substitutes 5
5305-00-349-81864143 INTERCHANGEABLE
Screw,minute Wheel
Wakmann Watch Company Inc
4730-00-702-634908001009 INTERCHANGEABLE
Elbow,pipe
Nibco Inc Chemtrol Div
2510-00-769-74437697443 INTERCHANGEABLE
Shock Absorber,direct Action
U S Army Tank Automotive Command Amsta-Im-Mm
8030-00-779-86774143 INTERCHANGEABLE
Resin,epo,y
Henkel Loctite Corp
6515-01-642-06364143 INTERCHANGEABLE
Meter,flow Rate Indicating,anest
Tsi Incorporated
Cross-Reference Index
Part NumberManufacturer
4143 B-K Medical Systems, Inc. (USA)
4143 Bruel & Kjaer Uk Ltd (GBR)
Related Parts
5305-00-349-8186INTERCHANGEABLE
SCREW,MINUTE WHEEL
4143
4730-00-702-6349INTERCHANGEABLE
ELBOW,PIPE
08001009
2510-00-769-7443INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
7697443
8030-00-779-8677INTERCHANGEABLE
RESIN,EPO,Y
4143
6515-01-642-0636INTERCHANGEABLE
METER,FLOW RATE INDICATING,ANEST
4143

Frequently Asked Questions

What is NSN 6625-01-091-0771?

NSN 6625-01-091-0771 is a Calibrator,audio Level, manufactured by B-K Medical Systems, Inc., classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-091-0771?

NSN 6625-01-091-0771 has 2 cross-referenced part numbers: 4143 (B-K Medical Systems, Inc.), 4143 (Bruel & Kjaer Uk Ltd).

What NSN replaces 6625-01-091-0771?

There are 5 known substitutes for 6625-01-091-0771: 5305-00-349-8186, 4730-00-702-6349, 2510-00-769-7443 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4143?

Key specifications for 4143: Indicator Type: METER; Functional Description: PRECISION LABORATORY CALIBRATION AND INVESTIGATION ON CONDENSER MICROPHONES; Furnished Items and Quantity: PREAMPLIFIER TYPE 2627, 1 IN. MICROPHONE TYPE 4160, 2 ELECTROSTATIC ACTUATORS, 3 COUPLERS IN; Overall Depth: 200.0 MILLIMETERS NOMINAL MM. 20 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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