PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40215Limiter-Attenuator

Frequency Electronics Inc · NSN 5820-00-135-6993 · FSC 5820 · No Item Name Available
Verified by PartsTable
NSN 5820-00-135-6993 — this item is cataloged by the U.S. Government under National Stock Number 5820-00-135-6993. Primary manufacturer part number: 40215.
Features
  • Limiter-Attenuator — FSC 5820
  • 4 verified cross-references
  • Primary manufacturer: Frequency Electronics Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Limiter-Attenuator, cataloged under National Stock Number 5820-00-135-6993, is classified within Federal Supply Class 5820 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Frequency Electronics Inc. This item has 4 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.

Catalog Facts
Item NameLimiter-Attenuator
FSC / FSG5820 — No Item Name Available (FSG 58)
ManufacturersFei Microwave Inc (CAGE 21847); Frequency Electronics Inc (CAGE 14844)
Technical Specifications
ParameterValue
NSN5820-00-135-6993
Primary Part Number40215
Item NameLimiter-Attenuator
FSC / FSG5820 / 58 — No Item Name Available
ManufacturerFrequency Electronics Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5950-00-135-711640215 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
4730-00-231-343455-FT-3/4IN INTERCHANGEABLE
Trap,steam
Itt Fluid Technology Corp Itt Mcdonnell and Miller
3455-00-231-350658-10077 INTERCHANGEABLE
Cutter,milling,side
Union Butterfield Corp P O Box 9000 Crystal Lake Il 60039
4820-00-389-846740215 INTERCHANGEABLE
Valve,globe
Northrop Grumman Systems Corporation Div Marine Systems
5315-00-841-233940215 INTERCHANGEABLE
Pin,straight,headless
Acco-Babcock Inc Hoist and Crane Div
3930-00-933-375840215 INTERCHANGEABLE
Plate,drive
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5360-01-086-39521-1642 INTERCHANGEABLE
Spring
Pdi Ground Support Systems, Inc.
5962-01-225-674440215 INTERCHANGEABLE
Microcircuit,digital
Raytheon Company Div Rmd Strategic
5330-01-447-396340215 INTERCHANGEABLE
Gasket
Mine Safety Appliances Company
Cross-Reference Index
Part NumberManufacturer
L5501 Fei Microwave Inc (USA)
40215 PRIMARY Frequency Electronics Inc (USA)
40215 Fei Microwave Inc (USA)
L5501 Frequency Electronics Inc (USA)
Related Parts
5950-00-135-7116INTERCHANGEABLE
TRANSFORMER,POWER
40215
4730-00-231-3434INTERCHANGEABLE
TRAP,STEAM
55-FT-3/4IN
3455-00-231-3506INTERCHANGEABLE
CUTTER,MILLING,SIDE
58-10077
4820-00-389-8467INTERCHANGEABLE
VALVE,GLOBE
40215
5315-00-841-2339INTERCHANGEABLE
PIN,STRAIGHT,HEADLESS
40215
3930-00-933-3758INTERCHANGEABLE
PLATE,DRIVE
40215
5360-01-086-3952INTERCHANGEABLE
SPRING
1-1642
5962-01-225-6744INTERCHANGEABLE
MICROCIRCUIT,DIGITAL
40215
5330-01-447-3963INTERCHANGEABLE
GASKET
40215

Frequently Asked Questions

What is NSN 5820-00-135-6993?

NSN 5820-00-135-6993 is a Limiter-Attenuator, manufactured by Frequency Electronics Inc, classified under FSC 5820 (No Item Name Available). Status: active.

What are the part numbers for NSN 5820-00-135-6993?

NSN 5820-00-135-6993 has 4 cross-referenced part numbers: L5501 (Fei Microwave Inc), 40215 (Frequency Electronics Inc), 40215 (Fei Microwave Inc), L5501 (Frequency Electronics Inc).

What NSN replaces 5820-00-135-6993?

There are 9 known substitutes for 5820-00-135-6993: 5950-00-135-7116, 4730-00-231-3434, 3455-00-231-3506 and 6 more. Verify interchangeability with system specifications before substitution.

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