PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

103957-1Delay Line

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5999-00-063-9230 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-063-9230 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-063-9230. Primary manufacturer part number: 103957-1.
Features
  • Delay Line — FSC 5999
  • Operating Temp Range: +0.0 TO 60.0 CELSIUS DEGC
  • Stud Length: 0.375 INCHES NOMINAL IN
  • Body Length: 1.360 INCHES NOMINAL IN
  • Mounting Facility Quantity: 4
  • Body Width: 4.000 INCHES NOMINAL IN
  • Individual Section Quantity: 3
  • Longest Horizontal Distance Between Mounting Centers: 0.781 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Delay Line, cataloged under National Stock Number 5999-00-063-9230, 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 & Airborne Systems. Government technical data includes 30 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-063-9230
Primary Part Number103957-1
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Operating Temp Range+0.0 TO 60.0 CELSIUS DEGC
Stud Length0.375 INCHES NOMINAL IN
Body Length1.360 INCHES NOMINAL IN
Mounting Facility Quantity4
Body Width4.000 INCHES NOMINAL IN
Individual Section Quantity3
Longest Horizontal Distance Between Mounting Centers0.781 INCHES NOMINAL IN
Longest Vertical Distance Between Mounting Centers0.906 INCHES NOMINAL IN
Section Delay Time7.000 MICROSECONDS NOMINAL 1ST SECTION AND 0.500 MICROSECONDS NOMINAL 2ND SECTION AND 0.500 MICROSECONDS NOMINAL 3RD SECTION US
Mounting Provision Arrangement StyleFOUR POSITION RECTANGULAR
Mounting FacilityTHREADED STUD(S)
Signal Delay MethodINDUCTANCE
Output Impedance Rating400.000 OHMS
Input Impedance Rating400.000 OHMS
Pulse Rise Time Rating0.5 MICROSECONDS US
Thread Size and Series/type Designator0-138-32 UNIFIED NATIONAL COARSE (UNC)
Terminal Type and Quantity7 WIRE HOOK
Attenuation in Decibels2.000
FSC Application DataRADAR NONAIRBORNE EXCEPT FIRE CONTROL AND GUIDED MISSILE
Body Depth1.110 INCHES NOMINAL IN
Thread Pitch Diameters+0.1875 TO 0.1876 INCHES IN
Body StyleRECTANGULAR
Thread Class2A A
Operating Temp Range+0.0 TO 60.0 CELSIUS DEGC
Stud Length0.375 INCHES NOMINAL IN
Body Length1.360 INCHES NOMINAL IN
Mounting Facility Quantity4
Body Width4.000 INCHES NOMINAL IN
Individual Section Quantity3
Longest Horizontal Distance Between Mounting Centers0.781 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0200 lbs
Cube0.0002 cu ft
Verified Substitutes 12
Knife
5330-00-119-717550003 INTERCHANGEABLE
Gasket
Hamilton Sundstrand Corporation Dba Collins Aerospace
3010-00-569-834650003 INTERCHANGEABLE
Coupling,shaft,rigid
Parker Hannifin Corporation Div Hydraulic Systems Division
5330-00-599-62038354439 INTERCHANGEABLE
Seal,plain Encased
U S Army Tank Automotive Command Amsta-Im-Mm
5935-00-702-4199 INTERCHANGEABLE
Jack,tip
5985-00-948-2672013-1211-000 INTERCHANGEABLE
Line Section,radio Frequency Tra
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
6240-00-983-2641 INTERCHANGEABLE
Lamp,glow
4710-01-088-779050003 INTERCHANGEABLE
Tube Assembly,metal
C-Way Industries Inc
4420-01-176-05055000-3 INTERCHANGEABLE
Union Orifice
Aerco International, Inc. Dba Aerco International Inc
6615-01-266-764150003 INTERCHANGEABLE
Gyroscope,displacement
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
Cross-Reference Index
Part NumberManufacturer
103957-1 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
50-003 Polara Engineering, Inc. (USA)
Related Parts
5895-00-476-5633SUCCESSOR
KNIFE
5330-00-119-7175INTERCHANGEABLE
GASKET
50003
3010-00-569-8346INTERCHANGEABLE
COUPLING,SHAFT,RIGID
50003
5330-00-599-6203INTERCHANGEABLE
SEAL,PLAIN ENCASED
8354439
5935-00-702-4199INTERCHANGEABLE
JACK,TIP
5985-00-948-2672INTERCHANGEABLE
LINE SECTION,RADIO FREQUENCY TRA
013-1211-000
6240-00-983-2641INTERCHANGEABLE
LAMP,GLOW
4710-01-088-7790INTERCHANGEABLE
TUBE ASSEMBLY,METAL
50003
4420-01-176-0505INTERCHANGEABLE
UNION ORIFICE
5000-3
6615-01-266-7641INTERCHANGEABLE
GYROSCOPE,DISPLACEMENT
50003
5310-01-311-9139INTERCHANGEABLE
NUT,CROSSFEED
50003
3110-01-328-4075INTERCHANGEABLE
BALL,BEARING
50003

Frequently Asked Questions

What is NSN 5999-00-063-9230?

NSN 5999-00-063-9230 is a Delay Line, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-063-9230?

NSN 5999-00-063-9230 has 2 cross-referenced part numbers: 103957-1 (L3harris Technologies, Inc Div Space & Airborne Systems), 50-003 (Polara Engineering, Inc.).

What NSN replaces 5999-00-063-9230?

There are 12 known substitutes for 5999-00-063-9230: 5895-00-476-5633, 5330-00-119-7175, 3010-00-569-8346 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 103957-1?

Key specifications for 103957-1: Operating Temp Range: +0.0 TO 60.0 CELSIUS DEGC; Stud Length: 0.375 INCHES NOMINAL IN; Body Length: 1.360 INCHES NOMINAL IN; Mounting Facility Quantity: 4. 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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