PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

250120Delay Line

Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan · NSN 5999-00-860-9634 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-860-9634 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-860-9634. Primary manufacturer part number: 250120.
Features
  • Delay Line — FSC 5999
  • Unable to Decode: UNABLE TO DECODE
  • Signal Delay Method: LUMPED CONSTANT
  • Individual Section Quantity: 4
  • Terminal Type and Quantity: 15 PIN
  • Section Delay Time: 400.000 NANOSECONDS NOMINAL ALL SECTIONS NS
  • Delay Time Variation Method: TAPPED
  • Mounting Facility: PIN(S)
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Delay Line, cataloged under National Stock Number 5999-00-860-9634, 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 Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan. Government technical data includes 16 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
NSN5999-00-860-9634
Primary Part Number250120
Item NameDelay Line
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerLockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan
StatusACTIVE
Unable to DecodeUNABLE TO DECODE
Signal Delay MethodLUMPED CONSTANT
Individual Section Quantity4
Terminal Type and Quantity15 PIN
Section Delay Time400.000 NANOSECONDS NOMINAL ALL SECTIONS NS
Delay Time Variation MethodTAPPED
Mounting FacilityPIN(S)
Body StyleRECTANGULAR
Unable to DecodeUNABLE TO DECODE
Signal Delay MethodLUMPED CONSTANT
Individual Section Quantity4
Terminal Type and Quantity15 PIN
Section Delay Time400.000 NANOSECONDS NOMINAL ALL SECTIONS NS
Delay Time Variation MethodTAPPED
Mounting FacilityPIN(S)
Body StyleRECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 3
5330-00-291-9643250120 INTERCHANGEABLE
Seal,plain Encased
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4730-00-999-963625-0120 INTERCHANGEABLE
Coupling,pipe
Opw Fueling Components Inc. Div Opw Fueling Components
4820-01-039-36262-200055M1 INTERCHANGEABLE
Valve,check
Parker Hannifin Corporation Div Aerospace Group Headquarters
Cross-Reference Index
Part NumberManufacturer
250120 PRIMARY Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA)
Related Parts
5330-00-291-9643INTERCHANGEABLE
SEAL,PLAIN ENCASED
250120
4730-00-999-9636INTERCHANGEABLE
COUPLING,PIPE
25-0120
4820-01-039-3626INTERCHANGEABLE
VALVE,CHECK
2-200055M1

Frequently Asked Questions

What is NSN 5999-00-860-9634?

NSN 5999-00-860-9634 is a Delay Line, manufactured by Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-860-9634?

NSN 5999-00-860-9634 has 1 cross-referenced part number: 250120 (Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan).

What NSN replaces 5999-00-860-9634?

There are 3 known substitutes for 5999-00-860-9634: 5330-00-291-9643, 4730-00-999-9636, 4820-01-039-3626. Verify interchangeability with system specifications before substitution.

What are the specifications of 250120?

Key specifications for 250120: Unable to Decode: UNABLE TO DECODE; Signal Delay Method: LUMPED CONSTANT; Individual Section Quantity: 4; Terminal Type and Quantity: 15 PIN. 16 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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