PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

263XFilter,acoustical

Dbx Inc · NSN 5965-01-408-0566 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-01-408-0566 — this item is cataloged by the U.S. Government under National Stock Number 5965-01-408-0566. Primary manufacturer part number: 263X.
Features
  • Filter,acoustical — FSC 5965
  • General Characteristics Item Description: REDUCES EXCESSIVE SIBILANCE AND OTHER HIGH FREQUENCY TRANSIENTS FROM SOUNDS LIKE A VOCAL "S" OR "T" OR A CYMBAL CRASH.
  • Type/model Designation: 263X
  • Functional Description: USED FOR VOCAL DE-ESSING AND SMOOTHING OUT HARSH SIGNALS FROM SYNTHS, SAMPLERS AND OVER EQ'D PROGRAM MATERIAL.
  • 1 verified cross-reference
  • Primary manufacturer: Dbx Inc
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,acoustical, cataloged under National Stock Number 5965-01-408-0566, 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 Dbx Inc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5965-01-408-0566
Primary Part Number263X
Item NameFilter,acoustical
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerDbx Inc
StatusACTIVE
General Characteristics Item DescriptionREDUCES EXCESSIVE SIBILANCE AND OTHER HIGH FREQUENCY TRANSIENTS FROM SOUNDS LIKE A VOCAL "S" OR "T" OR A CYMBAL CRASH.
Type/model Designation263X
Functional DescriptionUSED FOR VOCAL DE-ESSING AND SMOOTHING OUT HARSH SIGNALS FROM SYNTHS, SAMPLERS AND OVER EQ'D PROGRAM MATERIAL.
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6240-00-228-7133263X INTERCHANGEABLE
Lamp,incandescent
Lamp Industry for Use with Industry Designations and Abbreviations for Lamps
Cross-Reference Index
Part NumberManufacturer
263X Dbx Inc (USA)
Related Parts
6240-00-228-7133INTERCHANGEABLE
LAMP,INCANDESCENT
263X

Frequently Asked Questions

What is NSN 5965-01-408-0566?

NSN 5965-01-408-0566 is a Filter,acoustical, manufactured by Dbx Inc, classified under FSC 5965 (No Item Name Available). Status: active.

What are the part numbers for NSN 5965-01-408-0566?

NSN 5965-01-408-0566 has 1 cross-referenced part number: 263X (Dbx Inc).

What NSN replaces 5965-01-408-0566?

There is 1 known substitute for 5965-01-408-0566: 6240-00-228-7133. Verify interchangeability with system specifications before substitution.

What are the specifications of 263X?

Key specifications for 263X: Overall Height: 1.750 INCHES NOMINAL IN; General Characteristics Item Description: REDUCES EXCESSIVE SIBILANCE AND OTHER HIGH FREQUENCY TRANSIENTS FROM SOUNDS LIKE A VOCAL "S" OR "T" OR A CYMBAL CRASH.; Part Name Assigned by Controlling Agency: DE-ESSER; Type/model Designation: 263X. 7 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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