PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4400B0126Delay Line

Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems · NSN 5999-00-811-9893 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-811-9893 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-811-9893. Primary manufacturer part number: 4400B0126.
Features
  • Delay Line — FSC 5999
  • Terminal Type and Quantity: 4 CONNECTOR, RECEPTACLE
  • Mounting Facility: UNTHREADED HOLE(S)
  • FSC Application Data: RADAR NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILE
  • Material: ALUMINUM ALLOY CASE
  • Body Depth: 1.375 INCHES NOMINAL IN
  • Input Impedance Rating: 75.000 OHMS
  • Output Impedance Rating: 75.000 OHMS
Applications
  • Applications requiring Aluminum Alloy Case construction
General Description

The Delay Line, cataloged under National Stock Number 5999-00-811-9893, 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 Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems. Government technical data includes 28 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-811-9893
Primary Part Number4400B0126
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerBae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
StatusACTIVE
Terminal Type and Quantity4 CONNECTOR, RECEPTACLE
Mounting FacilityUNTHREADED HOLE(S)
FSC Application DataRADAR NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILE
MaterialALUMINUM ALLOY CASE
Body Depth1.375 INCHES NOMINAL IN
Input Impedance Rating75.000 OHMS
Output Impedance Rating75.000 OHMS
Section Delay Time3.333 MILLISECONDS NOMINAL SINGLE SECTION MS
Attenuation in Decibels70.000
Hole Diameter0.250 INCHES NOMINAL IN
Individual Section Quantity1
Mounting Hole Radius18.875 INCHES NOMINAL IN
Frequency Rating26500.000 KILOHERTZ NOMINAL
Body Diameter19.875 INCHES NOMINAL IN
Body StyleROUND W/ROUND BASE
Unable to DecodeUNABLE TO DECODE
Operating Temp Range+0.0 TO 75.0 CELSIUS DEGC
Mounting Provision Arrangement StyleFOUR POSITION CIRCULAR
Frequency Bandwidth8000.0 KILOHERTZ NOMINAL
Flange Diameter20.000 INCHES NOMINAL IN
Signal Delay MethodLUMPED CONSTANT
Mounting Facility Quantity6
Terminal Type and Quantity4 CONNECTOR, RECEPTACLE
Mounting FacilityUNTHREADED HOLE(S)
FSC Application DataRADAR NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILE
MaterialALUMINUM ALLOY CASE
Body Depth1.375 INCHES NOMINAL IN
Input Impedance Rating75.000 OHMS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality Code00
Unit of IssueEA
SMR CodePH
Weight15.0000 lbs
Cube1.5307 cu ft
Verified Substitutes 12
Contact,electrical
6625-00-264-7997360-P-2 SUCCESSOR
Meter,electrical Frequency
Herman H Sticht Company, Inc Dba Megohmer Vibrating Reed & Standco
6240-00-225-9271 INTERCHANGEABLE
Lamp,incandescent
5360-00-292-4139S4504-3132491 PIECE 317 INTERCHANGEABLE
Spring,helical,compression
Naval Sea Systems Command
5977-00-467-4023 INTERCHANGEABLE
Brush,electrical Contact
6625-00-568-4892135-029 INTERCHANGEABLE
Meter,arbitrary Scale
Jewell Instruments Llc
5950-00-647-7727 INTERCHANGEABLE
Transformer,audio Frequency
5360-00-844-6694 INTERCHANGEABLE
Spring,helical,extension
5905-00-971-8524B8J500 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5970-01-136-772615-26 INTERCHANGEABLE
Insulator,bushing
Motorola Automotive Electronics
Cross-Reference Index
Part NumberManufacturer
4400B0126 PRIMARY Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems (USA)
1526 Micro Networks Corporation (USA)
4400B0126 Lockheed Corp Lockheed Electronics Co Inc (USA)
Related Parts
5999-00-097-1176SUCCESSOR
CONTACT,ELECTRICAL
6625-00-264-7997SUCCESSOR
METER,ELECTRICAL FREQUENCY
360-P-2
6240-00-225-9271INTERCHANGEABLE
LAMP,INCANDESCENT
5360-00-292-4139INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
S4504-3132491 PIECE 317
5977-00-467-4023INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
6625-00-568-4892INTERCHANGEABLE
METER,ARBITRARY SCALE
135-029
5950-00-647-7727INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5360-00-844-6694INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5905-00-971-8524INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
B8J500
5970-01-136-7726INTERCHANGEABLE
INSULATOR,BUSHING
15-26
5975-01-199-3221INTERCHANGEABLE
BUSHING,GUIDE PIN
1526
5365-01-346-1446INTERCHANGEABLE
SPACER,PLATE

Frequently Asked Questions

What is NSN 5999-00-811-9893?

NSN 5999-00-811-9893 is a Delay Line, manufactured by Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-811-9893?

NSN 5999-00-811-9893 has 3 cross-referenced part numbers: 4400B0126 (Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems), 1526 (Micro Networks Corporation), 4400B0126 (Lockheed Corp Lockheed Electronics Co Inc).

What NSN replaces 5999-00-811-9893?

There are 12 known substitutes for 5999-00-811-9893: 5999-00-097-1176, 6625-00-264-7997, 6240-00-225-9271 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4400B0126?

Key specifications for 4400B0126: Overall Depth: 1.750 INCHES NOMINAL IN; Terminal Type and Quantity: 4 CONNECTOR, RECEPTACLE; Mounting Facility: UNTHREADED HOLE(S); FSC Application Data: RADAR NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILE. 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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