PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M421642SUB5PT4Contact,electrical

Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin · NSN 5999-00-238-2290 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-238-2290 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-238-2290. Primary manufacturer part number: M421642SUB5PT4.
Features
  • Contact,electrical — FSC 5999
  • Precious Material and Location: BODY AND CONTACT SURFACES SILVER
  • Precious Material: SILVER
  • Material: COPPER ALLOY BODY AND CONTACT
  • Surface Treatment: SILVER BODY AND CONTACT
  • Precious Material and Weight: 0.005 SILVER GRAINS, TROY
  • Style Designator: LEAF TAP CONTACT W/ ROUND FLATTED FIXED POINT
  • Unthreaded Mounting Hole Diameter: 0.156 INCHES NOMINAL IN
Applications
  • Applications requiring Copper Alloy Body and Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-238-2290, 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 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-238-2290
Primary Part NumberM421642SUB5PT4
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin
StatusCANCELLED
Precious Material and LocationBODY AND CONTACT SURFACES SILVER
Precious MaterialSILVER
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentSILVER BODY AND CONTACT
Precious Material and Weight0.005 SILVER GRAINS, TROY
Style DesignatorLEAF TAP CONTACT W/ ROUND FLATTED FIXED POINT
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Mounting Facility Quantity1
Point Diameter0.281 INCHES NOMINAL IN
Point Height0.125 INCHES NOMINAL IN
Precious Material and LocationBODY AND CONTACT SURFACES SILVER
Precious MaterialSILVER
MaterialCOPPER ALLOY BODY AND CONTACT
Surface TreatmentSILVER BODY AND CONTACT
Precious Material and Weight0.005 SILVER GRAINS, TROY
Style DesignatorLEAF TAP CONTACT W/ ROUND FLATTED FIXED POINT
Unthreaded Mounting Hole Diameter0.156 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Mounting Facility Quantity1
Point Diameter0.281 INCHES NOMINAL IN
Point Height0.125 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeQ
Unit of IssueEA
SMR CodeJ
Weight0.1000 lbs
Cube0.0090 cu ft
Verified Substitutes 10
Tape Reader Subassembly
5910-00-280-5914 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
3040-00-322-5637SM-B-187292 INTERCHANGEABLE
Lever,manual Control
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2530-00-629-560010369 INTERCHANGEABLE
Spindle,wheel,driving-Nondriving
Saginaw Products Corporation Dba Cignys
5950-00-832-687210369 INTERCHANGEABLE
Transformer,power
Oeco, Llc Dba Pacific Scientific Oeco Div Fire Safety and Power Systems
5330-01-028-1623CFSP15524XF5010151 316 INTERCHANGEABLE
Seal,mechanical
Defense Maritime Solutions, Inc.
3010-01-060-523210-369 INTERCHANGEABLE
Universal Joint,nonvehicular
Apex Tool Group, Llc
4820-01-302-771910560219 INTERCHANGEABLE
Sleeve and Slide,directional Con
General Dynamics Land Systems Canadacorp
5975-01-436-564310369 INTERCHANGEABLE
Tray,mounting,electronic Equipme
Hollingsead International, Llc
5365-01-502-906510-369 INTERCHANGEABLE
Spacer,straight
Konrad Marine Inc Div Konrad Marine
Cross-Reference Index
Part NumberManufacturer
M421642SUB5PT4 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
1861G12005C1G3 Schneider Electric Usa, Inc. (USA)
10369 Nelson Stud Welding, Inc. Dba Nelson Stud Welding Inc (USA)
1861G1 Schneider Electric Usa, Inc. (USA)
1861G1 Nelson Stud Welding, Inc. Dba Nelson Stud Welding Inc (USA)
1861D32G1 Schneider Electric Usa, Inc. (USA)
1861G1 Schneider Electric Usa, Inc. (USA)
Related Parts
7025-00-022-3411SUCCESSOR
TAPE READER SUBASSEMBLY
5910-00-280-5914INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
3040-00-322-5637INTERCHANGEABLE
LEVER,MANUAL CONTROL
SM-B-187292
2530-00-629-5600INTERCHANGEABLE
SPINDLE,WHEEL,DRIVING-NONDRIVING
10369
5950-00-832-6872INTERCHANGEABLE
TRANSFORMER,POWER
10369
5330-01-028-1623INTERCHANGEABLE
SEAL,MECHANICAL
CFSP15524XF5010151 316
3010-01-060-5232INTERCHANGEABLE
UNIVERSAL JOINT,NONVEHICULAR
10-369
4820-01-302-7719INTERCHANGEABLE
SLEEVE AND SLIDE,DIRECTIONAL CON
10560219
5975-01-436-5643INTERCHANGEABLE
TRAY,MOUNTING,ELECTRONIC EQUIPME
10369
5365-01-502-9065INTERCHANGEABLE
SPACER,STRAIGHT
10-369

Frequently Asked Questions

What is NSN 5999-00-238-2290?

NSN 5999-00-238-2290 is a Contact,electrical, manufactured by Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-238-2290?

NSN 5999-00-238-2290 has 7 cross-referenced part numbers: M421642SUB5PT4 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 1861G12005C1G3 (Schneider Electric Usa, Inc.), 10369 (Nelson Stud Welding, Inc. Dba Nelson Stud Welding Inc), 1861G1 (Schneider Electric Usa, Inc.), 1861G1 (Nelson Stud Welding, Inc. Dba Nelson Stud Welding Inc) and 2 more.

What NSN replaces 5999-00-238-2290?

There are 10 known substitutes for 5999-00-238-2290: 7025-00-022-3411, 5910-00-280-5914, 3040-00-322-5637 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of M421642SUB5PT4?

Key specifications for M421642SUB5PT4: Precious Material and Location: BODY AND CONTACT SURFACES SILVER; Precious Material: SILVER; Material: COPPER ALLOY BODY AND CONTACT; Surface Treatment: SILVER BODY AND CONTACT. 28 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-238-2290 still in active supply?

NSN 5999-00-238-2290 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.
PartsTable Design LLC · partstable.com