PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50-665Delay Line

Polara Engineering, Inc. · NSN 5999-01-127-5793 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-01-127-5793 — this item is cataloged by the U.S. Government under National Stock Number 5999-01-127-5793. Primary manufacturer part number: 50-665.
Features
  • Delay Line — FSC 5999
  • Mounting Facility: TERMINAL
  • Pulse Rise Time Rating: 10.0 NANOSECONDS NS
  • Body Width: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
  • Signal Delay Method: LUMPED CONSTANT
  • Body Length: 0.640 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN
  • Output Impedance Rating: 100.000 OHMS
  • Input Impedance Rating: 100.000 OHMS
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Delay Line, cataloged under National Stock Number 5999-01-127-5793, 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 Polara Engineering, Inc.. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-01-127-5793
Primary Part Number50-665
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerPolara Engineering, Inc.
StatusACTIVE
Mounting FacilityTERMINAL
Pulse Rise Time Rating10.0 NANOSECONDS NS
Body Width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
Signal Delay MethodLUMPED CONSTANT
Body Length0.640 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN
Output Impedance Rating100.000 OHMS
Input Impedance Rating100.000 OHMS
Body Depth0.200 INCHES MAXIMUM IN
Mounting Facility Quantity14
Segment Delay Time7.500 NANOSECONDS MAXIMUM SINGLE SECTION ALL SEGMENTS NS
Section Delay Time30.000 NANOSECONDS MAXIMUM SINGLE SECTION NS
Individual Section Quantity1
Segment Quantity Per Section4 SINGLE SECTION
Voltage Rating50.000 VOLTS MAXIMUM
Body StyleRECTANGULAR
Terminal Type and Quantity14 TAB SOLDER LUG
Mounting FacilityTERMINAL
Pulse Rise Time Rating10.0 NANOSECONDS NS
Body Width0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
Signal Delay MethodLUMPED CONSTANT
Body Length0.640 INCHES MINIMUM AND 0.786 INCHES MAXIMUM IN
Output Impedance Rating100.000 OHMS
Input Impedance Rating100.000 OHMS
Body Depth0.200 INCHES MAXIMUM IN
Mounting Facility Quantity14
Segment Delay Time7.500 NANOSECONDS MAXIMUM SINGLE SECTION ALL SEGMENTS NS
Section Delay Time30.000 NANOSECONDS MAXIMUM SINGLE SECTION NS
Individual Section Quantity1
Segment Quantity Per Section4 SINGLE SECTION
Voltage Rating50.000 VOLTS MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeYN
Weight0.0400 lbs
Cube0.0064 cu ft
Verified Substitutes 9
5945-00-060-1342 INTERCHANGEABLE
Relay,electromagnetic
5360-00-236-865150665 INTERCHANGEABLE
Spring,helical,compression
Hamilton Sundstrand Corporation Dba Collins Aerospace
5815-00-356-3387SC-B-70202 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
3460-00-603-9143K-425-WS AND 47-BD INTERCHANGEABLE
Wheel,abrasive
Sioux Tools Inc
1650-00-730-354550665 INTERCHANGEABLE
Cover,selector,valve
Integral Aerospace, Llc Dba Pcx Aerosystems - Santa Ana Div Integral Aerospace, Llc Dba Pcx Aerosystems - Santa Ana
3010-00-758-96452390003 INTERCHANGEABLE
Coupling,shaft,rigid
Concentric Rockford Inc
2930-01-297-0334 INTERCHANGEABLE
Pump,cooling System,engine
1005-01-425-3969MOSSBERG590-TYPE50665 INTERCHANGEABLE
Shotgun,12 Gage
O F Mossberg & Sons Inc
3694-01-426-6766A60429 INTERCHANGEABLE
Blower,static Eliminating
Desco Industries Inc
Cross-Reference Index
Part NumberManufacturer
50-665 Polara Engineering, Inc. (USA)
50MH665-104 Polara Engineering, Inc. (USA)
6010124-002 Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc (USA)
Related Parts
5945-00-060-1342INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5360-00-236-8651INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
50665
5815-00-356-3387INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SC-B-70202
3460-00-603-9143INTERCHANGEABLE
WHEEL,ABRASIVE
K-425-WS AND 47-BD
1650-00-730-3545INTERCHANGEABLE
COVER,SELECTOR,VALVE
50665
3010-00-758-9645INTERCHANGEABLE
COUPLING,SHAFT,RIGID
2390003
2930-01-297-0334INTERCHANGEABLE
PUMP,COOLING SYSTEM,ENGINE
1005-01-425-3969INTERCHANGEABLE
SHOTGUN,12 GAGE
MOSSBERG590-TYPE50665
3694-01-426-6766INTERCHANGEABLE
BLOWER,STATIC ELIMINATING
A60429

Frequently Asked Questions

What is NSN 5999-01-127-5793?

NSN 5999-01-127-5793 is a Delay Line, manufactured by Polara Engineering, Inc., classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-01-127-5793?

NSN 5999-01-127-5793 has 3 cross-referenced part numbers: 50-665 (Polara Engineering, Inc.), 50MH665-104 (Polara Engineering, Inc.), 6010124-002 (Bae Systems Information and Electronic Systems Integration Inc. Div Bae Systems Information & Electronic Systems Integration Inc).

What NSN replaces 5999-01-127-5793?

There are 9 known substitutes for 5999-01-127-5793: 5945-00-060-1342, 5360-00-236-8651, 5815-00-356-3387 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 50-665?

Key specifications for 50-665: Mounting Facility: TERMINAL; Pulse Rise Time Rating: 10.0 NANOSECONDS NS; Body Width: 0.220 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN; Signal Delay Method: LUMPED CONSTANT. 30 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com