PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

687999-1Electron Tube

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5960-00-804-0957 · FSC 5960 · No Item Name Available
Verified by PartsTable
NSN 5960-00-804-0957 — this item is cataloged by the U.S. Government under National Stock Number 5960-00-804-0957. Primary manufacturer part number: 687999-1.
Features
  • Electron Tube — FSC 5960
  • Nondefinitive Spec/std Data: 6115A TYPE A
  • Tube Type: KLYSTRON
  • 6 verified cross-references
  • Primary manufacturer: Lockheed Martin Corporation Div Rms - Mitchel Field
Applications
  • Fluid conveyance
  • Hydraulic system plumbing
  • Pneumatic line routing
General Description

The Electron Tube, cataloged under National Stock Number 5960-00-804-0957, 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 Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5960-00-804-0957
Primary Part Number687999-1
Item NameElectron Tube
FSC / FSG5960 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusCANCELLED
Nondefinitive Spec/std Data6115A TYPE A
Tube TypeKLYSTRON
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5960-00-114-4658 INTERCHANGEABLE
Electron Tube
5960-00-114-4890 INTERCHANGEABLE
Electron Tube
5960-00-849-5736 INTERCHANGEABLE
Electron Tube
5960-00-894-004366B3852 INTERCHANGEABLE
Electron Tube
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
6130-01-103-7450 INTERCHANGEABLE
Power Supply
5945-01-518-51496115A INTERCHANGEABLE
Relay Subassembly
Matrix Systems Corporation
Cross-Reference Index
Part NumberManufacturer
687999-1 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
RK6115A Raytheon Company Div Corp (USA)
MIL-E-1/845 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
6115A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
DMS 84-047 Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings) (USA)
RK6115A Raytheon Company Dba Raytheon (USA)
Related Parts
5960-00-114-4658INTERCHANGEABLE
ELECTRON TUBE
5960-00-114-4890INTERCHANGEABLE
ELECTRON TUBE
5960-00-849-5736INTERCHANGEABLE
ELECTRON TUBE
5960-00-894-0043INTERCHANGEABLE
ELECTRON TUBE
66B3852
6130-01-103-7450INTERCHANGEABLE
POWER SUPPLY
5945-01-518-5149INTERCHANGEABLE
RELAY SUBASSEMBLY
6115A

Frequently Asked Questions

What is NSN 5960-00-804-0957?

NSN 5960-00-804-0957 is a Electron Tube, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5960 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5960-00-804-0957?

NSN 5960-00-804-0957 has 6 cross-referenced part numbers: 687999-1 (Lockheed Martin Corporation Div Rms - Mitchel Field), RK6115A (Raytheon Company Div Corp), MIL-E-1/845 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 6115A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), DMS 84-047 (Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)) and 1 more.

What NSN replaces 5960-00-804-0957?

There are 6 known substitutes for 5960-00-804-0957: 5960-00-114-4658, 5960-00-114-4890, 5960-00-849-5736 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 687999-1?

Key specifications for 687999-1: Nondefinitive Spec/std Data: 6115A TYPE A; Special Features: ENVELOPE MATERIAL: METAL; Tube Type: KLYSTRON. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5960-00-804-0957 still in active supply?

NSN 5960-00-804-0957 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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