PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77040Contact,electrical

Telemechanics Inc · NSN 5999-00-193-2789 · FSC 5999 · No Item Name Available
Verified by PartsTable
NSN 5999-00-193-2789 — this item is cataloged by the U.S. Government under National Stock Number 5999-00-193-2789. Primary manufacturer part number: 77040.
Features
  • Contact,electrical — FSC 5999
  • Distance Between Mounting Facility Centers: 0.375 INCHES NOMINAL IN
  • Material: TUNGSTEN CONTACT
  • Unthreaded Mounting Hole Diameter: 0.195 INCHES NOMINAL IN
  • Mounting Facility Quantity: 2
  • Mounting Method: UNTHREADED HOLE(S)
  • Distance Between Mounting Facility Centers: 0.375 INCHES NOMINAL IN
  • Material: TUNGSTEN CONTACT
Applications
  • Applications requiring Tungsten Contact construction
General Description

The Contact,electrical, cataloged under National Stock Number 5999-00-193-2789, 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 Telemechanics Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN5999-00-193-2789
Primary Part Number77040
Item NameContact,electrical
FSC / FSG5999 / 59 — No Item Name Available
ManufacturerTelemechanics Inc
StatusCANCELLED
Distance Between Mounting Facility Centers0.375 INCHES NOMINAL IN
MaterialTUNGSTEN CONTACT
Unthreaded Mounting Hole Diameter0.195 INCHES NOMINAL IN
Mounting Facility Quantity2
Mounting MethodUNTHREADED HOLE(S)
Distance Between Mounting Facility Centers0.375 INCHES NOMINAL IN
MaterialTUNGSTEN CONTACT
Unthreaded Mounting Hole Diameter0.195 INCHES NOMINAL IN
Mounting Facility Quantity2
Mounting MethodUNTHREADED HOLE(S)
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Unit of IssueEA
SMR CodeJ
Weight0.0300 lbs
Cube0.0004 cu ft
Verified Substitutes 9
1285-00-052-55791440805 INTERCHANGEABLE
Gear Assembly
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5330-00-165-511277040 INTERCHANGEABLE
Retainer,seal
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
5985-00-984-1861770-40 INTERCHANGEABLE
Coupler,directional
Waveline Inc
5962-01-100-8948 INTERCHANGEABLE
Microcircuit,linear
5962-01-128-3891 INTERCHANGEABLE
Microcircuit,linear
5962-01-162-5569 INTERCHANGEABLE
Microcircuit,linear
5962-01-273-0785 INTERCHANGEABLE
Microcircuit,linear
5962-01-291-6196 INTERCHANGEABLE
Microcircuit,linear
5977-01-377-769777040RT INTERCHANGEABLE
Electrode
Exceltec Intl Corp
Cross-Reference Index
Part NumberManufacturer
77040 PRIMARY Telemechanics Inc (USA)
77040 American Telephone and Telegraph Co (USA)
77040 At and T Corp (USA)
Related Parts
1285-00-052-5579INTERCHANGEABLE
GEAR ASSEMBLY
1440805
5330-00-165-5112INTERCHANGEABLE
RETAINER,SEAL
77040
5985-00-984-1861INTERCHANGEABLE
COUPLER,DIRECTIONAL
770-40
5962-01-100-8948INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5962-01-128-3891INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5962-01-162-5569INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5962-01-273-0785INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5962-01-291-6196INTERCHANGEABLE
MICROCIRCUIT,LINEAR
5977-01-377-7697INTERCHANGEABLE
ELECTRODE
77040RT

Frequently Asked Questions

What is NSN 5999-00-193-2789?

NSN 5999-00-193-2789 is a Contact,electrical, manufactured by Telemechanics Inc, classified under FSC 5999 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5999-00-193-2789?

NSN 5999-00-193-2789 has 3 cross-referenced part numbers: 77040 (Telemechanics Inc), 77040 (American Telephone and Telegraph Co), 77040 (At and T Corp).

What NSN replaces 5999-00-193-2789?

There are 9 known substitutes for 5999-00-193-2789: 1285-00-052-5579, 5330-00-165-5112, 5985-00-984-1861 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 77040?

Key specifications for 77040: Distance Between Mounting Facility Centers: 0.375 INCHES NOMINAL IN; Material: TUNGSTEN CONTACT; Unthreaded Mounting Hole Diameter: 0.195 INCHES NOMINAL IN; Mounting Facility Quantity: 2. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5999-00-193-2789 still in active supply?

NSN 5999-00-193-2789 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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