PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

053-0021Contact,electrical

Te Connectivity Corporation Dba Microdot Products · NSN 5999-00-553-9078 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-553-9078 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-553-9078. Primary manufacturer part number: 053-0021.
Features
  • Contact,electrical — FSC 5999
  • Pin Diameter: 0.042 INCHES NOMINAL IN
  • Material: COPPER ALLOY BODY AND CONTACT
  • Surface Treatment: GOLD AND COPPER BODY AND CONTACT
  • Precious Material: GOLD
  • Terminal Type and Quantity: 1 THREADED HOLE AXIALLY AT ONE END
  • Pin Length: 0.375 INCHES NOMINAL IN
  • Material Document and Classification: QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT
Applications
  • Applications requiring Copper Alloy Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-553-9078, 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 Te Connectivity Corporation Dba Microdot Products. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 13 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-553-9078
Primary Part Number053-0021
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation Dba Microdot Products
StatusCANCELLED
Pin Diameter0.042 INCHES NOMINAL IN
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentGOLD AND COPPER BODY AND CONTACT
Precious MaterialGOLD
Terminal Type and Quantity1 THREADED HOLE AXIALLY AT ONE END
Pin Length0.375 INCHES NOMINAL IN
Material Document and ClassificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT
Surface Treatment Document and ClassificationMIL-G-45204,TYPE 2,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE BODY AND CONTACT
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Precious Material and Weight0.005 GOLD GRAINS, TROY
Mounting MethodTERMINAL
Style DesignatorPIN CONTACT
Overall Diameter0.105 INCHES NOMINAL IN
Pin Length0.375 INCHES NOMINAL IN
Pin Diameter0.042 INCHES NOMINAL IN
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentGOLD AND COPPER BODY AND CONTACT
Precious MaterialGOLD
Terminal Type and Quantity1 THREADED HOLE AXIALLY AT ONE END
Material Document and ClassificationQQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE BODY AND CONTACT
Surface Treatment Document and ClassificationMIL-G-45204,TYPE 2,CLASS 1 MIL SPEC 1ST TREATMENT RESPONSE BODY AND CONTACT
Precious Material and LocationBODY AND CONTACT SURFACES GOLD
Precious Material and Weight0.005 GOLD GRAINS, TROY
Mounting MethodTERMINAL
Style DesignatorPIN CONTACT
Overall Diameter0.105 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeDZ
Weight0.0025 lbs
Cube0.0000 cu ft
Verified Substitutes 12
Contact,electrical
Multimeter
5940-00-082-4896 INTERCHANGEABLE
Terminal,feedthru
5975-00-100-8730 INTERCHANGEABLE
Box Connector,electrical
6130-00-235-09845321 INTERCHANGEABLE
Vibrator,interrupter
Cornell-Dubilier Electronics, Inc.
5930-00-258-5424 INTERCHANGEABLE
Switch,rotary
2520-00-425-71175321 INTERCHANGEABLE
Cover
Eaton Corp Transmission Div
1650-00-773-301450344902 INTERCHANGEABLE
Parts Kit,valve Ass
Hydro-Aire Aerospace Corp
5935-00-827-9124 INTERCHANGEABLE
Connector,plug,electrical
5930-01-187-0447 INTERCHANGEABLE
Switch,rotary
Cross-Reference Index
Part NumberManufacturer
2JC2416H04 Westinghouse Electric Corp (USA)
712199-27 Raytheon Company Div Rmd Strategic (USA)
114-006-0002 Northrop Grumman Systems Corporation (USA)
712199-027 Raytheon Company Div Rmd Strategic (USA)
053-0021 PRIMARY Te Connectivity Corporation Dba Microdot Products (USA)
227-1243P2 Raytheon Company Div Corp (USA)
53-21 PRIMARY Te Connectivity Corporation Dba Microdot Products (USA)
924005-2 PRIMARY Raytheon Company Dba Raytheon (USA)
9072061 Us Army Aviation and Missile Command (USA)
053-0021-0001 PRIMARY Te Connectivity Corporation Dba Microdot Products (USA)
2312450-2 Naval Sea Systems Command (USA)
2JC2416H04 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
5321 Te Connectivity Corporation Dba Microdot Products (USA)
LU1723 PRIMARY Northrop Grumman Systems Corp Dba Northrop Grumman Systems Corp (USA)
227-1243P2 Raytheon Company Dba Raytheon Co (USA)
053-0021-001 PRIMARY Te Connectivity Corporation Dba Microdot Products (USA)
CP35-2-19-70-2 Lockheed Martin Corporation Div Lockheed Martin Systems & Global Solutions (USA)
563852-2 Allied-Signal Inc Dba Allied-Signal Aerospace Co Electrodynamics Div (USA)
Related Parts
5999-00-241-7730SUCCESSOR
CONTACT,ELECTRICAL
6625-00-298-9638SUCCESSOR
MULTIMETER
5940-00-082-4896INTERCHANGEABLE
TERMINAL,FEEDTHRU
5975-00-100-8730INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
6130-00-235-0984INTERCHANGEABLE
VIBRATOR,INTERRUPTER
5321
5930-00-258-5424INTERCHANGEABLE
SWITCH,ROTARY
2520-00-425-7117INTERCHANGEABLE
COVER
5321
1650-00-773-3014INTERCHANGEABLE
PARTS KIT,VALVE ASS
50344902
5935-00-827-9124INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5930-01-187-0447INTERCHANGEABLE
SWITCH,ROTARY
5945-01-226-5055INTERCHANGEABLE
SOLENOID,ELECTRICAL
532-1
4730-01-365-1558INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO HOSE
532-1

Frequently Asked Questions

What is NSN 5999-00-553-9078?

NSN 5999-00-553-9078 is a Contact,electrical, manufactured by Te Connectivity Corporation Dba Microdot Products, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-553-9078?

NSN 5999-00-553-9078 has 18 cross-referenced part numbers: 2JC2416H04 (Westinghouse Electric Corp), 712199-27 (Raytheon Company Div Rmd Strategic), 114-006-0002 (Northrop Grumman Systems Corporation), 712199-027 (Raytheon Company Div Rmd Strategic), 053-0021 (Te Connectivity Corporation Dba Microdot Products) and 13 more.

What NSN replaces 5999-00-553-9078?

There are 12 known substitutes for 5999-00-553-9078: 5999-00-241-7730, 6625-00-298-9638, 5940-00-082-4896 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 053-0021?

Key specifications for 053-0021: Pin Diameter: 0.042 INCHES NOMINAL IN; Material: COPPER ALLOY BODY AND CONTACT; Surface Treatment: GOLD AND COPPER BODY AND CONTACT; Precious Material: GOLD. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-553-9078 still in active supply?

NSN 5999-00-553-9078 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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