PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-140Contact,electrical

Eaton Corp Opns & Technical Center · NSN 5999-00-035-7878 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-035-7878 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-035-7878. Primary manufacturer part number: 40-140.
Features
  • Contact,electrical — FSC 5999
  • Precious Material and Location: EXTERNAL SURFACE SILVER
  • Surface Treatment: SILVER CONTACT
  • Surface Treatment: SILVER BODY
  • Material: COPPER ALLOY BODY
  • Unthreaded Mounting Hole Diameter: 0.120 INCHES NOMINAL IN
  • Material: COPPER ALLOY CONTACT
  • Mounting Facility Quantity: 1
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-035-7878, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references 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
NSN5999-00-035-7878
Primary Part Number40-140
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerEaton Corp Opns & Technical Center
StatusACTIVE
Precious Material and LocationEXTERNAL SURFACE SILVER
Surface TreatmentSILVER CONTACT
Surface TreatmentSILVER BODY
MaterialCOPPER ALLOY BODY
Unthreaded Mounting Hole Diameter0.120 INCHES NOMINAL IN
MaterialCOPPER ALLOY CONTACT
Mounting Facility Quantity1
Style DesignatorLEAF TAP CONTACT W/ ROUND FLATTED FIXED POINT
Mounting MethodUNTHREADED HOLE(S)
Current Rating in Amps5.71
Voltage Rating in Volts440.0 AC
Precious Material and Weight0.100 SILVER GRAINS, TROY
Point Diameter0.054 INCHES NOMINAL IN
Precious MaterialSILVER
Precious Material and LocationEXTERNAL SURFACE SILVER
Surface TreatmentSILVER CONTACT
Surface TreatmentSILVER BODY
MaterialCOPPER ALLOY BODY
Unthreaded Mounting Hole Diameter0.120 INCHES NOMINAL IN
MaterialCOPPER ALLOY CONTACT
Mounting Facility Quantity1
Style DesignatorLEAF TAP CONTACT W/ ROUND FLATTED FIXED POINT
Mounting MethodUNTHREADED HOLE(S)
Current Rating in Amps5.71
Voltage Rating in Volts440.0 AC
Precious Material and Weight0.100 SILVER GRAINS, TROY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0300 lbs
Cube0.0030 cu ft
Verified Substitutes 12
3110-00-100-0801 INTERCHANGEABLE
Cup,tapered Roller Bearing
3455-00-224-364010190 INTERCHANGEABLE
Cutter,milling,plain
Niagara Cutter Inc
5330-00-594-6321 INTERCHANGEABLE
Seal,plain Encased
5330-00-850-792240140 INTERCHANGEABLE
Gasket
Rubbercraft Corporation of California, Ltd. Dba Rubbercraft Corp
5965-00-858-539840140 INTERCHANGEABLE
Bracket,earphone
Roanwell, Llc
6760-00-891-220440140 INTERCHANGEABLE
Lens,recording
Recon/optical, Inc. Dba Pacific Optical
6525-01-258-243040140 INTERCHANGEABLE
Cleaner,x-Ray Film Processor
Air Techniques, Inc.
2530-01-324-940740-140 INTERCHANGEABLE
Wheel Assembly,pneumatic Tire
Aircraft Wheel and Brake, Llc Dba Cleveland Wheel and Brake Systems
5120-01-428-4778 INTERCHANGEABLE
Socket,socket Wrench
8040-01-533-811740140 INTERCHANGEABLE
Adhesive
Loctite Corp
Cross-Reference Index
Part NumberManufacturer
40-140 PRIMARY Eaton Corp Opns & Technical Center (USA)
70231W1ITEM13 Eaton Corp Opns & Technical Center (USA)
70329W1ITEM8 Eaton Corp Opns & Technical Center (USA)
76695W1ITEM14 Eaton Corp Opns & Technical Center (USA)
Related Parts
3110-00-100-0801INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
3455-00-224-3640INTERCHANGEABLE
CUTTER,MILLING,PLAIN
10190
5330-00-594-6321INTERCHANGEABLE
SEAL,PLAIN ENCASED
5330-00-850-7922INTERCHANGEABLE
GASKET
40140
5965-00-858-5398INTERCHANGEABLE
BRACKET,EARPHONE
40140
6760-00-891-2204INTERCHANGEABLE
LENS,RECORDING
40140
6525-01-258-2430INTERCHANGEABLE
CLEANER,X-RAY FILM PROCESSOR
40140
2530-01-324-9407INTERCHANGEABLE
WHEEL ASSEMBLY,PNEUMATIC TIRE
40-140
5120-01-428-4778INTERCHANGEABLE
SOCKET,SOCKET WRENCH
8040-01-533-8117INTERCHANGEABLE
ADHESIVE
40140
6105-01-562-5824INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
40140
5310-01-604-6818INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
40140

Frequently Asked Questions

What is NSN 5999-00-035-7878?

NSN 5999-00-035-7878 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 5999-00-035-7878?

NSN 5999-00-035-7878 has 4 cross-referenced part numbers: 40-140 (Eaton Corp Opns & Technical Center), 70231W1ITEM13 (Eaton Corp Opns & Technical Center), 70329W1ITEM8 (Eaton Corp Opns & Technical Center), 76695W1ITEM14 (Eaton Corp Opns & Technical Center).

What NSN replaces 5999-00-035-7878?

There are 12 known substitutes for 5999-00-035-7878: 3110-00-100-0801, 3455-00-224-3640, 5330-00-594-6321 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-140?

Key specifications for 40-140: Precious Material and Location: EXTERNAL SURFACE SILVER; Surface Treatment: SILVER CONTACT; Surface Treatment: SILVER BODY; Overall Length: 1.025 INCHES NOMINAL IN. 30 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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