PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M23859/21-017Delay Line

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5999-01-082-9842 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-082-9842 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-082-9842. Primary manufacturer part number: M23859/21-017.
Features
  • Delay Line — FSC 5999
  • Mounting Facility: TERMINAL
  • Mounting Facility Quantity: 3
  • Longest Horizontal Distance Between Mounting Centers: 0.800 INCHES NOMINAL IN
  • Body Width: 0.320 INCHES MAXIMUM IN
  • Body Length: 1.000 INCHES NOMINAL IN
  • Individual Section Quantity: 1
  • Operating Temp Range: -55.0 TO 125.0 CELSIUS DEGC
Applications
  • Applications requiring Plastic Epoxy Body construction
General Description

The Delay Line, cataloged under National Stock Number 5999-01-082-9842, is classified within Federal Supply Class 5999 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-082-9842
Primary Part NumberM23859/21-017
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Mounting FacilityTERMINAL
Mounting Facility Quantity3
Longest Horizontal Distance Between Mounting Centers0.800 INCHES NOMINAL IN
Body Width0.320 INCHES MAXIMUM IN
Body Length1.000 INCHES NOMINAL IN
Individual Section Quantity1
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Pulse Rise Time Rating30.0 NANOSECONDS NS
Signal Delay MethodLUMPED CONSTANT
Test Data Document81349-MIL-D-23859 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MaterialPLASTIC EPOXY BODY
Body Depth0.320 INCHES MAXIMUM IN
Mounting Provision Arrangement Style2 POSITION IN-LINE
Terminal Type and Quantity3 WIRE LEADS
Body StyleRECTANGULAR
Section Delay Time100.000 NANOSECONDS NOMINAL SINGLE SECTION NS
Output Impedance Rating500.000 OHMS
Attenuation in Decibels0.500
Input Impedance Rating500.000 OHMS
Mounting FacilityTERMINAL
Mounting Facility Quantity3
Longest Horizontal Distance Between Mounting Centers0.800 INCHES NOMINAL IN
Body Width0.320 INCHES MAXIMUM IN
Body Length1.000 INCHES NOMINAL IN
Individual Section Quantity1
Operating Temp Range-55.0 TO 125.0 CELSIUS DEGC
Pulse Rise Time Rating30.0 NANOSECONDS NS
Signal Delay MethodLUMPED CONSTANT
Test Data Document81349-MIL-D-23859 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
MaterialPLASTIC EPOXY BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality Code1
Unit of IssueEA
SMR CodeJZ
Weight0.0200 lbs
Cube0.0020 cu ft
Verified Substitutes 7
5999-00-934-8743712810-29 SUCCESSOR
Delay Line
Raytheon Company Div Rmd Strategic
5999-00-400-30991176 INTERCHANGEABLE
Delay Line
Neurotech Corp Control Electronics Div
5999-00-460-2724 INTERCHANGEABLE
Delay Line
5999-00-934-8740 INTERCHANGEABLE
Delay Line
5999-00-934-8741712810-25 INTERCHANGEABLE
Delay Line
Raytheon Company Div Rmd Strategic
5999-00-934-8742712810-26 INTERCHANGEABLE
Delay Line
Raytheon Company Div Rmd Strategic
5999-01-115-7556505174-1 INTERCHANGEABLE
Delay Line
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
Cross-Reference Index
Part NumberManufacturer
M23859/21-017 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-D-23859 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5999-00-934-8743SUCCESSOR
DELAY LINE
712810-29
5999-00-400-3099INTERCHANGEABLE
DELAY LINE
1176
5999-00-460-2724INTERCHANGEABLE
DELAY LINE
5999-00-934-8740INTERCHANGEABLE
DELAY LINE
5999-00-934-8741INTERCHANGEABLE
DELAY LINE
712810-25
5999-00-934-8742INTERCHANGEABLE
DELAY LINE
712810-26
5999-01-115-7556INTERCHANGEABLE
DELAY LINE
505174-1

Frequently Asked Questions

What is NSN 5999-01-082-9842?

NSN 5999-01-082-9842 is a Delay Line, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-082-9842?

NSN 5999-01-082-9842 has 2 cross-referenced part numbers: M23859/21-017 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-D-23859 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5999-01-082-9842?

There are 7 known substitutes for 5999-01-082-9842: 5999-00-934-8743, 5999-00-400-3099, 5999-00-460-2724 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M23859/21-017?

Key specifications for M23859/21-017: Mounting Facility: TERMINAL; Mounting Facility Quantity: 3; Longest Horizontal Distance Between Mounting Centers: 0.800 INCHES NOMINAL IN; Body Width: 0.320 INCHES MAXIMUM IN. 30 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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