PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1N5551Electron Tube

L3 Technologies, Inc. Div L3 Keo · NSN 5960-01-343-4938 · FSC 5960 · No Item Name Available
Verified by PartsTable
NSN 5960-01-343-4938 — this item is cataloged by the U.S. Government under National Stock Number 5960-01-343-4938. Primary manufacturer part number: 1N5551.
Features
  • Electron Tube — FSC 5960
  • 1 verified cross-reference
  • Primary manufacturer: L3 Technologies, Inc. Div L3 Keo
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Electron Tube, cataloged under National Stock Number 5960-01-343-4938, is classified within Federal Supply Class 5960 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is L3 Technologies, Inc. Div L3 Keo. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5960-01-343-4938
Primary Part Number1N5551
Item NameElectron Tube
FSC / FSG5960 / 59 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div L3 Keo
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5961-00-140-0031 INTERCHANGEABLE
Semiconductor Device,diode
5961-00-416-4858 INTERCHANGEABLE
Semiconductor Device,diode
5961-01-016-73791N5551 INTERCHANGEABLE
Semiconductor Device,diode
Micross Corpus Christi, S.a. De C.v. Div Semtech Corpus Christi Corporation
5961-01-202-509523443 INTERCHANGEABLE
Semiconductor Device,diode
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
Cross-Reference Index
Part NumberManufacturer
1N5551 PRIMARY L3 Technologies, Inc. Div L3 Keo (USA)
Related Parts
5961-00-140-0031INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-00-416-4858INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5961-01-016-7379INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
1N5551
5961-01-202-5095INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
23443

Frequently Asked Questions

What is NSN 5960-01-343-4938?

NSN 5960-01-343-4938 is a Electron Tube, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 5960 (No Item Name Available). Status: active.

What are the part numbers for NSN 5960-01-343-4938?

NSN 5960-01-343-4938 has 1 cross-referenced part number: 1N5551 (L3 Technologies, Inc. Div L3 Keo).

What NSN replaces 5960-01-343-4938?

There are 4 known substitutes for 5960-01-343-4938: 5961-00-140-0031, 5961-00-416-4858, 5961-01-016-7379 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1N5551?

Key specifications for 1N5551: End Item Identification: USED ON 324 PERISCOPE. 1 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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