PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

820021Contact,electrical

L3 Aviation Products, Inc. Dba L3 Technologies · NSN 5999-00-646-7935 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-646-7935 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-646-7935. Primary manufacturer part number: 820021.
Features
  • Contact,electrical — FSC 5999
  • Point Diameter: 0.1875 INCHES NOMINAL IN
  • Distance Between Mounting Facility Centers: 0.400 INCHES NOMINAL IN
  • Unthreaded Mounting Hole Diameter: 0.147 INCHES NOMINAL IN
  • Point Height: 0.095 INCHES NOMINAL IN
  • Mounting Method: UNTHREADED HOLE(S)
  • Mounting Facility Quantity: 2
  • Precious Material and Weight: 0.005 SILVER GRAINS, TROY
Applications
  • Applications requiring Silver Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-646-7935, 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 L3 Aviation Products, Inc. Dba L3 Technologies. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-646-7935
Primary Part Number820021
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerL3 Aviation Products, Inc. Dba L3 Technologies
StatusACTIVE
Point Diameter0.1875 INCHES NOMINAL IN
Distance Between Mounting Facility Centers0.400 INCHES NOMINAL IN
Unthreaded Mounting Hole Diameter0.147 INCHES NOMINAL IN
Point Height0.095 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Mounting Facility Quantity2
Precious Material and Weight0.005 SILVER GRAINS, TROY
Precious MaterialSILVER
MaterialSILVER CONTACT
Precious Material and LocationBODY AND CONTACT SILVER
Style DesignatorFLAT LEAF CONTACT W/ ROUND FIXED POINT
MaterialSILVER BODY
Precious MaterialSILVER
MaterialSILVER CONTACT
Point Diameter0.1875 INCHES NOMINAL IN
Distance Between Mounting Facility Centers0.400 INCHES NOMINAL IN
Unthreaded Mounting Hole Diameter0.147 INCHES NOMINAL IN
Point Height0.095 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S)
Mounting Facility Quantity2
Precious Material and Weight0.005 SILVER GRAINS, TROY
Precious Material and LocationBODY AND CONTACT SILVER
Style DesignatorFLAT LEAF CONTACT W/ ROUND FIXED POINT
MaterialSILVER BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeY
Verified Substitutes 2
2915-00-547-666390-187-1 INTERCHANGEABLE
Valve Assy,by Pass,
Hydro-Aire Aerospace Corp
5120-01-407-0265 INTERCHANGEABLE
Screwdriver,pin
Cross-Reference Index
Part NumberManufacturer
820021 L3 Aviation Products, Inc. Dba L3 Technologies (USA)
Related Parts
2915-00-547-6663INTERCHANGEABLE
VALVE ASSY,BY PASS,
90-187-1
5120-01-407-0265INTERCHANGEABLE
SCREWDRIVER,PIN

Frequently Asked Questions

What is NSN 5999-00-646-7935?

NSN 5999-00-646-7935 is a Contact,electrical, manufactured by L3 Aviation Products, Inc. Dba L3 Technologies, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-646-7935?

NSN 5999-00-646-7935 has 1 cross-referenced part number: 820021 (L3 Aviation Products, Inc. Dba L3 Technologies).

What NSN replaces 5999-00-646-7935?

There are 2 known substitutes for 5999-00-646-7935: 2915-00-547-6663, 5120-01-407-0265. Verify interchangeability with system specifications before substitution.

What are the specifications of 820021?

Key specifications for 820021: Overall Length: 1.600 INCHES NOMINAL IN; Point Diameter: 0.1875 INCHES NOMINAL IN; Distance Between Mounting Facility Centers: 0.400 INCHES NOMINAL IN; Unthreaded Mounting Hole Diameter: 0.147 INCHES NOMINAL IN. 28 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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