PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-120Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-035-7935 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-035-7935 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-035-7935. Primary manufacturer part number: 21-120.
Features
  • Contact,electrical — FSC 5999
  • Material: COPPER CONTACT
  • Mounting Facility Quantity: 3
  • Mounting Method: UNTHREADED HOLE(S)
  • Voltage Rating in Volts: 115.0 DC
  • Unthreaded Mounting Hole Diameter: 0.250 INCHES NOMINAL IN
  • Material: COPPER BODY
  • Material: COPPER CONTACT
Applications
  • Applications requiring Copper Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-035-7935, 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 Eaton Corp Opns & Technical Center. Government technical data includes 12 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-035-7935
Primary Part Number21-120
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusACTIVE
MaterialCOPPER CONTACT
Mounting Facility Quantity3
Mounting MethodUNTHREADED HOLE(S)
Voltage Rating in Volts115.0 DC
Unthreaded Mounting Hole Diameter0.250 INCHES NOMINAL IN
MaterialCOPPER BODY
MaterialCOPPER CONTACT
Mounting Facility Quantity3
Mounting MethodUNTHREADED HOLE(S)
Voltage Rating in Volts115.0 DC
Unthreaded Mounting Hole Diameter0.250 INCHES NOMINAL IN
MaterialCOPPER BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeX
Verified Substitutes 12
5330-00-116-523621098 INTERCHANGEABLE
Seal,plain
Skf Usa Inc. Dba Skf Aerospace Sealing Solutions
4510-00-138-8262 INTERCHANGEABLE
Drain,bathtub
3110-00-157-1963211-20 INTERCHANGEABLE
Bearing,ball,annular
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5950-00-175-316621-120 INTERCHANGEABLE
Reactor
Bae Systems Information and Electronic Systems Integration Inc.
4510-00-192-8985119506 INTERCHANGEABLE
Seal Ring,closet Bowl Flange
Mag Aerospace Industries, Llc Div Safran Cabins
4720-00-289-3306100R5-20 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
3417-00-307-901421-120 INTERCHANGEABLE
Milling Machine Horizontal
Rockingham-Lunex Co
5360-00-326-6958A21120 INTERCHANGEABLE
Spring,helical,compression
Aerocontrolex Group, Inc. Dba Aero Fluid Products
4520-00-566-2072 INTERCHANGEABLE
Heating Element,electrical,nonim
5905-00-636-6383CB2339A INTERCHANGEABLE
Resistor,variable,nonwire Wound,
Cts Corp Electromechanical Div
Cross-Reference Index
Part NumberManufacturer
21-120 PRIMARY Eaton Corp Opns & Technical Center (USA)
Related Parts
5330-00-116-5236INTERCHANGEABLE
SEAL,PLAIN
21098
4510-00-138-8262INTERCHANGEABLE
DRAIN,BATHTUB
3110-00-157-1963INTERCHANGEABLE
BEARING,BALL,ANNULAR
211-20
5950-00-175-3166INTERCHANGEABLE
REACTOR
21-120
4510-00-192-8985INTERCHANGEABLE
SEAL RING,CLOSET BOWL FLANGE
119506
4720-00-289-3306INTERCHANGEABLE
HOSE,NONMETALLIC
100R5-20
3417-00-307-9014INTERCHANGEABLE
MILLING MACHINE HORIZONTAL
21-120
5360-00-326-6958INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
A21120
4520-00-566-2072INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
5905-00-636-6383INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
CB2339A
4720-00-912-4095INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
192-21120
5940-00-983-6141INTERCHANGEABLE
TERMINAL BOARD

Frequently Asked Questions

What is NSN 5999-00-035-7935?

NSN 5999-00-035-7935 is a Contact,electrical, manufactured by Eaton Corp Opns & Technical Center, classified under FSC 5999 (No Item Name Available). Status: active.

What are the part numbers for NSN 5999-00-035-7935?

NSN 5999-00-035-7935 has 1 cross-referenced part number: 21-120 (Eaton Corp Opns & Technical Center).

What NSN replaces 5999-00-035-7935?

There are 12 known substitutes for 5999-00-035-7935: 5330-00-116-5236, 4510-00-138-8262, 3110-00-157-1963 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21-120?

Key specifications for 21-120: Material: COPPER CONTACT; Mounting Facility Quantity: 3; Mounting Method: UNTHREADED HOLE(S); Voltage Rating in Volts: 115.0 DC. 12 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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