PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

19020Coupler,directional

Frontgrade Technologies Inc. · NSN 5985-00-501-4642 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-501-4642 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-501-4642. Primary manufacturer part number: 19020.
Features
  • Coupler,directional — FSC 5985
  • Design Type: UNIDIRECTIONAL
  • Identifying Number: TERMINAL FITTING TYPE UG-135/U; TYPE UG-136/U; TYPE UG-21D/U
  • Radio Frequency Rating: 9.345 GIGAHERTZ MINIMUM AND 9.405 GIGAHERTZ MAXIMUM
  • Unit Type: WAVEGUIDE
  • Power Loss in Decibels: 20.0
  • Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING
  • Terminal Fitting Controlling Agency: JETDS
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-00-501-4642, 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 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-00-501-4642
Primary Part Number19020
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerFrontgrade Technologies Inc.
StatusCANCELLED
Design TypeUNIDIRECTIONAL
Identifying NumberTERMINAL FITTING TYPE UG-135/U; TYPE UG-136/U; TYPE UG-21D/U
Radio Frequency Rating9.345 GIGAHERTZ MINIMUM AND 9.405 GIGAHERTZ MAXIMUM
Unit TypeWAVEGUIDE
Power Loss in Decibels20.0
Usage DesignMAIN LINE AND SECONDARY LINE TERMINAL FITTING
Terminal Fitting Controlling AgencyJETDS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5310-00-245-5446W222-37 INTERCHANGEABLE
Washer,flat
Enerpac Tool Group Corp
6650-00-526-4239S19006 INTERCHANGEABLE
Magnifier
Fisher Scientific Co
5821-00-617-5869 INTERCHANGEABLE
Control,radio Set
5305-00-988-1169 INTERCHANGEABLE
Screw,machine
5330-01-011-152819020 INTERCHANGEABLE
Gasket
Ritchie Engineering Co Inc
5910-01-299-2800 INTERCHANGEABLE
Capacitor,variable,air Dielectri
4510-01-304-8308 INTERCHANGEABLE
Drain,bathtub
6550-01-325-8779R19020 INTERCHANGEABLE
Bacteria Culture Control Discs
Remel Inc.
5915-01-345-9070190-20 INTERCHANGEABLE
Filter,low Pass
Bencher Inc
4810-01-591-631519020 INTERCHANGEABLE
Parts Kit,electro-Pneumatic Actu
F.s. Welsford Company
Cross-Reference Index
Part NumberManufacturer
19020 Litton Systems Inc Airtron Div (USA)
19020 PRIMARY Frontgrade Technologies Inc. (USA)
LC19020 Airtronics Development Corp (USA)
Related Parts
5310-00-245-5446INTERCHANGEABLE
WASHER,FLAT
W222-37
6650-00-526-4239INTERCHANGEABLE
MAGNIFIER
S19006
5821-00-617-5869INTERCHANGEABLE
CONTROL,RADIO SET
5305-00-988-1169INTERCHANGEABLE
SCREW,MACHINE
5330-01-011-1528INTERCHANGEABLE
GASKET
19020
5910-01-299-2800INTERCHANGEABLE
CAPACITOR,VARIABLE,AIR DIELECTRI
4510-01-304-8308INTERCHANGEABLE
DRAIN,BATHTUB
6550-01-325-8779INTERCHANGEABLE
BACTERIA CULTURE CONTROL DISCS
R19020
5915-01-345-9070INTERCHANGEABLE
FILTER,LOW PASS
190-20
4810-01-591-6315INTERCHANGEABLE
PARTS KIT,ELECTRO-PNEUMATIC ACTU
19020
4720-01-711-2232INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
A73-18789-15
4720-01-711-2279INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
A73-18789-14

Frequently Asked Questions

What is NSN 5985-00-501-4642?

NSN 5985-00-501-4642 is a Coupler,directional, manufactured by Frontgrade Technologies Inc., classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-501-4642?

NSN 5985-00-501-4642 has 3 cross-referenced part numbers: 19020 (Litton Systems Inc Airtron Div), 19020 (Frontgrade Technologies Inc.), LC19020 (Airtronics Development Corp).

What NSN replaces 5985-00-501-4642?

There are 12 known substitutes for 5985-00-501-4642: 5310-00-245-5446, 6650-00-526-4239, 5821-00-617-5869 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 19020?

Key specifications for 19020: Design Type: UNIDIRECTIONAL; Identifying Number: TERMINAL FITTING TYPE UG-135/U; TYPE UG-136/U; TYPE UG-21D/U; Radio Frequency Rating: 9.345 GIGAHERTZ MINIMUM AND 9.405 GIGAHERTZ MAXIMUM; Unit Type: WAVEGUIDE. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-501-4642 still in active supply?

NSN 5985-00-501-4642 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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