PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

49963Delay Line

L3harris Technologies, Inc. Div Space and Airborne Systems · NSN 5999-00-781-9435 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-781-9435 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-781-9435. Primary manufacturer part number: 49963.
Features
  • Delay Line — FSC 5999
  • Segment Delay Time: 102.000 MICROSECONDS NOMINAL 1ST SECTION 11TH SEGMENT US
  • Segment Delay Time: 115.000 MICROSECONDS NOMINAL 2ND SECTION 10TH SEGMENT US
  • Body Length: 3.375 INCHES NOMINAL IN
  • Segment Delay Time: 82.000 MICROSECONDS NOMINAL 2ND SECTION 6TH SEGMENT US
  • Segment Delay Time: 32.200 MICROSECONDS NOMINAL 1ST SECTION 3RD SEGMENT US
  • Segment Delay Time: 41.600 MICROSECONDS NOMINAL 1ST SECTION 4TH SEGMENT US
  • Mounting Facility Quantity: 4
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Delay Line, cataloged under National Stock Number 5999-00-781-9435, 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 L3harris Technologies, Inc. Div Space and Airborne Systems. Government technical data includes 30 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-781-9435
Primary Part Number49963
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Div Space and Airborne Systems
StatusACTIVE
Segment Delay Time102.000 MICROSECONDS NOMINAL 1ST SECTION 11TH SEGMENT US
Segment Delay Time115.000 MICROSECONDS NOMINAL 2ND SECTION 10TH SEGMENT US
Body Length3.375 INCHES NOMINAL IN
Segment Delay Time82.000 MICROSECONDS NOMINAL 2ND SECTION 6TH SEGMENT US
Segment Delay Time32.200 MICROSECONDS NOMINAL 1ST SECTION 3RD SEGMENT US
Segment Delay Time41.600 MICROSECONDS NOMINAL 1ST SECTION 4TH SEGMENT US
Mounting Facility Quantity4
Segment Delay Time52.000 MICROSECONDS NOMINAL 1ST SECTION 5TH SEGMENT US
Segment Quantity Per Section10 2ND SECTION
Terminal Type and Quantity26 TAB SOLDER LUG
FSC Application DataSONAR SET
Segment Delay Time10.600 MICROSECONDS NOMINAL 1ST SECTION 1ST SEGMENT US
Body Depth3.000 INCHES NOMINAL IN
Section Delay Time752.000 MICROSECONDS NOMINAL ALL SECTIONS US
Thread Size and Series/type Designator0.164-32 UNIFIED NATIONAL COARSE (UNC)
Mounting Provision Arrangement StyleFOUR POSITION RECTANGULAR
Segment Delay Time11.600 MICROSECONDS NOMINAL 1ST SECTION 2ND SEGMENT US
Attenuation in Decibels3.000
Output Impedance Rating10.000 KILOHMS
Input Impedance Rating10.000 KILOHMS
Delay Time Variation MethodTAPPED
Signal Delay MethodLUMPED CONSTANT
Segment Quantity Per Section11 1ST SECTION
Mounting FacilityTHREADED HOLE(S)
Segment Delay Time108.000 MICROSECONDS NOMINAL 2ND SECTION 9TH SEGMENT US
Segment Delay Time81.000 MICROSECONDS NOMINAL 1ST SECTION 8TH SEGMENT US
Segment Delay Time101.000 MICROSECONDS NOMINAL 2ND SECTION 8TH SEGMENT US
Segment Delay Time92.000 MICROSECONDS NOMINAL 2ND SECTION 7TH SEGMENT US
Thread Class2B
Longest Vertical Distance Between Mounting Centers5.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0100 lbs
Cube0.0010 cu ft
Verified Substitutes 3
5905-00-003-2547 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5330-00-527-776449963 INTERCHANGEABLE
Packing,preformed
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
4820-01-225-696249963C INTERCHANGEABLE
Piston,valve
Griswold Industries Dba Cla-Val Co
Cross-Reference Index
Part NumberManufacturer
49963 PRIMARY L3harris Technologies, Inc. Div Space and Airborne Systems (USA)
Related Parts
5905-00-003-2547INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5330-00-527-7764INTERCHANGEABLE
PACKING,PREFORMED
49963
4820-01-225-6962INTERCHANGEABLE
PISTON,VALVE
49963C

Frequently Asked Questions

What is NSN 5999-00-781-9435?

NSN 5999-00-781-9435 is a Delay Line, manufactured by L3harris Technologies, Inc. Div Space and Airborne Systems, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-781-9435?

NSN 5999-00-781-9435 has 1 cross-referenced part number: 49963 (L3harris Technologies, Inc. Div Space and Airborne Systems).

What NSN replaces 5999-00-781-9435?

There are 3 known substitutes for 5999-00-781-9435: 5905-00-003-2547, 5330-00-527-7764, 4820-01-225-6962. Verify interchangeability with system specifications before substitution.

What are the specifications of 49963?

Key specifications for 49963: Segment Delay Time: 102.000 MICROSECONDS NOMINAL 1ST SECTION 11TH SEGMENT US; Segment Delay Time: 115.000 MICROSECONDS NOMINAL 2ND SECTION 10TH SEGMENT US; Body Length: 3.375 INCHES NOMINAL IN; Segment Delay Time: 82.000 MICROSECONDS NOMINAL 2ND SECTION 6TH SEGMENT US. 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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