PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

73840Switch,waveguide

Frontgrade Technologies Inc. · NSN 5985-00-812-8319 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-812-8319 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-812-8319. Primary manufacturer part number: 73840.
Features
  • Switch,waveguide — FSC 5985
  • Flange Connecting Facility and Quantity: 10 UNTHREADED HOLE(S)
  • Supplementary Features: FOUR 0.620 IN. DIA MTG HOLES ON 12.750 IN. SQUARE MTG CENTERS; PRESSURIZED TO 10 PSI; INCL MECHANICAL OBSERVATION WINDOW; PROVIDES SWITCHING BETWEEN RADAR CHANNELS AND ANTENNA OR DUMMY LOAD IN
  • Terminal Type and Quantity: 4 RECTANGULAR FLANGE
  • Waveguide Flange Type: CONTACT
  • Actuator Operating Method: MOTOR
  • Coupling Position Quantity: 2
  • Actuator Voltage in Volts: 120.0 NOMINAL
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Switch,waveguide, cataloged under National Stock Number 5985-00-812-8319, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Frontgrade Technologies Inc.. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-812-8319
Primary Part Number73840
Item NameSwitch,waveguide
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerFrontgrade Technologies Inc.
StatusACTIVE
Flange Connecting Facility and Quantity10 UNTHREADED HOLE(S)
Supplementary FeaturesFOUR 0.620 IN. DIA MTG HOLES ON 12.750 IN. SQUARE MTG CENTERS; PRESSURIZED TO 10 PSI; INCL MECHANICAL OBSERVATION WINDOW; PROVIDES SWITCHING BETWEEN RADAR CHANNELS AND ANTENNA OR DUMMY LOAD IN
Terminal Type and Quantity4 RECTANGULAR FLANGE
Waveguide Flange TypeCONTACT
Actuator Operating MethodMOTOR
Coupling Position Quantity2
Actuator Voltage in Volts120.0 NOMINAL
Switch TypeTRANSFER
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2520-00-574-91244457 INTERCHANGEABLE
Shifter Fork,vehicular
Trackmobile Llc
1610-00-887-040773840 INTERCHANGEABLE
Housing and Pin
Triumph Engine Control Systems Llc
6810-01-074-25897-3840 INTERCHANGEABLE
Sodium Phosphate,tribasic,dodeca
Avantor Performance Materials, Inc.
5305-01-522-6817 INTERCHANGEABLE
Screw,machine
Cross-Reference Index
Part NumberManufacturer
73840 Atlantic Microwave Corporation Div Cobham Electronic Systems (USA)
73840 PRIMARY Frontgrade Technologies Inc. (USA)
SA-711/FPS Joint Electronics Type Designation System (USA)
73840 Litton Systems Inc Airtron Div (USA)
N218785-2 Raytheon Company Dba Raytheon Co (USA)
Related Parts
2520-00-574-9124INTERCHANGEABLE
SHIFTER FORK,VEHICULAR
4457
1610-00-887-0407INTERCHANGEABLE
HOUSING AND PIN
73840
6810-01-074-2589INTERCHANGEABLE
SODIUM PHOSPHATE,TRIBASIC,DODECA
7-3840
5305-01-522-6817INTERCHANGEABLE
SCREW,MACHINE

Frequently Asked Questions

What is NSN 5985-00-812-8319?

NSN 5985-00-812-8319 is a Switch,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-812-8319?

NSN 5985-00-812-8319 has 5 cross-referenced part numbers: 73840 (Atlantic Microwave Corporation Div Cobham Electronic Systems), 73840 (Frontgrade Technologies Inc.), SA-711/FPS (Joint Electronics Type Designation System), 73840 (Litton Systems Inc Airtron Div), N218785-2 (Raytheon Company Dba Raytheon Co).

What NSN replaces 5985-00-812-8319?

There are 4 known substitutes for 5985-00-812-8319: 2520-00-574-9124, 1610-00-887-0407, 6810-01-074-2589 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 73840?

Key specifications for 73840: Flange Connecting Facility and Quantity: 10 UNTHREADED HOLE(S); Overall Width: 25.500 INCHES NOMINAL IN; Special Features: RELATED NSN 5985-00-538-5223, N218785-1 MODIFIED BY L212337-1; REFERENCE DATA: FIG 376, INDEX 67, T.O. 31P6-2FPS-20-4AA, PG 2-151; Overall Height: 20.000 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com