PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

990-4SSocket,plug-in Electronic Compon

Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations · NSN 5935-00-508-1876 · FSC 5935 · No Item Name Available
Verified by PartsTable
NSN 5935-00-508-1876 — this item is cataloged by the U.S. Government under National Stock Number 5935-00-508-1876. Primary manufacturer part number: 990-4S.
Features
  • Socket,plug-in Electronic Compon — FSC 5935
  • Polarization Type: CENTER KEY HOLE
  • Precious Material and Location: CONTACT SURFACES SILVER
  • Fabrication Method: MOLDED
  • Surface Treatment: SILVER CONTACT
  • Material: COPPER ALLOY CONTACT
  • Precious Material: SILVER
  • Material: PLASTIC BODY
Applications
  • Applications requiring Copper Alloy Contact construction
General Description

The Socket,plug-in Electronic Compon, cataloged under National Stock Number 5935-00-508-1876, is classified within Federal Supply Class 5935 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5935-00-508-1876
Primary Part Number990-4S
Item NameSocket,plug-in Electronic Compon
FSC / FSG5935 / 59 — No Item Name Available
ManufacturerCommunications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations
StatusACTIVE
Polarization TypeCENTER KEY HOLE
Precious Material and LocationCONTACT SURFACES SILVER
Fabrication MethodMOLDED
Surface TreatmentSILVER CONTACT
MaterialCOPPER ALLOY CONTACT
Precious MaterialSILVER
MaterialPLASTIC BODY
Precious Material and Weight0.007 SILVER GRAINS, TROY
Terminal Type and Quantity7 TAB, SOLDER LUG
Features ProvidedCENTER SHIELD
Mounting MethodRETAINER RING
Mounting Hole StyleROUND, W/KEYWAY
Specific Equipment AccommodatedELECTRON TUBE
Mounting Type for Which DesignedCHASSIS
Accommodated Contact Quantity7
Body Mounting Hole Accommodation Diameter1.625 INCHES NOMINAL IN
Missing Contact Designation5TH CONTACT POSITION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5340-00-234-4779Y101 INTERCHANGEABLE
Key Blank
Ilco Unican Corp Dba Wolf Sales
5955-00-877-7107Y101 INTERCHANGEABLE
Oven,electrical-Electronic Compo
Emcore Corporation Div Concord Division
4730-00-936-2367 INTERCHANGEABLE
Elbow,tube to Hose
Cross-Reference Index
Part NumberManufacturer
990-4S PRIMARY Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations (USA)
124-109-51 Teledyne Brown Engineering, Inc. Dba Teledyne Advanced Electronic Solutions Div Teledyne Advanced Electronic Solutions (USA)
740040 Oai Electronics, Llc Div Oai Electronics (USA)
Y101 Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations (USA)
Related Parts
5340-00-234-4779INTERCHANGEABLE
KEY BLANK
Y101
5955-00-877-7107INTERCHANGEABLE
OVEN,ELECTRICAL-ELECTRONIC COMPO
Y101
4730-00-936-2367INTERCHANGEABLE
ELBOW,TUBE TO HOSE

Frequently Asked Questions

What is NSN 5935-00-508-1876?

NSN 5935-00-508-1876 is a Socket,plug-in Electronic Compon, manufactured by Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations, classified under FSC 5935 (No Item Name Available). Status: active.

What are the part numbers for NSN 5935-00-508-1876?

NSN 5935-00-508-1876 has 4 cross-referenced part numbers: 990-4S (Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations), 124-109-51 (Teledyne Brown Engineering, Inc. Dba Teledyne Advanced Electronic Solutions Div Teledyne Advanced Electronic Solutions), 740040 (Oai Electronics, Llc Div Oai Electronics), Y101 (Communications & Power Industries Llc Dba Cpi Div Microwave Power Products Division - Eimac Operations).

What NSN replaces 5935-00-508-1876?

There are 3 known substitutes for 5935-00-508-1876: 5340-00-234-4779, 5955-00-877-7107, 4730-00-936-2367. Verify interchangeability with system specifications before substitution.

What are the specifications of 990-4S?

Key specifications for 990-4S: Polarization Type: CENTER KEY HOLE; Precious Material and Location: CONTACT SURFACES SILVER; Fabrication Method: MOLDED; Surface Treatment: SILVER CONTACT. 17 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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