PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RF0143Coupler,directional

Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector · NSN 5985-00-617-3540 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-617-3540 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-617-3540. Primary manufacturer part number: RF0143.
Features
  • Coupler,directional — FSC 5985
  • Unit Type: TRANSMISSION LINE
  • Terminal Fitting Controlling Agency: MIL
  • Radio Frequency Rating: 225.0 MEGAHERTZ MINIMUM AND 400.0 MEGAHERTZ MAXIMUM
  • Power Loss in Decibels: 20.0
  • Design Type: UNIDIRECTIONAL
  • Identifying Number: TERMINAL FITTING TYPE NO. UG218/U
  • Usage Design: MAIN LINE TERMINAL FITTING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-00-617-3540, 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 Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN5985-00-617-3540
Primary Part NumberRF0143
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerLax Electronics, Inc. Dba Automatic Connector Div Automatic Connector
StatusCANCELLED
Unit TypeTRANSMISSION LINE
Terminal Fitting Controlling AgencyMIL
Radio Frequency Rating225.0 MEGAHERTZ MINIMUM AND 400.0 MEGAHERTZ MAXIMUM
Power Loss in Decibels20.0
Design TypeUNIDIRECTIONAL
Identifying NumberTERMINAL FITTING TYPE NO. UG218/U
Usage DesignMAIN LINE TERMINAL FITTING
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5130-00-113-496041PC17TSQ4 INTERCHANGEABLE
Nut Runner and Screwdriver,pneum
Ingersoll-Rand Co Power Tool Div
5340-00-193-36322364 INTERCHANGEABLE
Strap,retaining
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
2520-00-350-2644 INTERCHANGEABLE
Spring
6680-00-403-59656518-110-136 INTERCHANGEABLE
Shaft Assembly,flexible
Schulze Mfg., Inc.
5950-00-474-5610661178 INTERCHANGEABLE
Transformer,radio Frequency
Lockheed Martin Corporation Div Rms - Mitchel Field
4920-00-708-30562364 INTERCHANGEABLE
Leg Assembly,stand,long
Marvel Manufacturing Co Div the Marvel Manufacturing Company
5975-00-782-11185728 INTERCHANGEABLE
Pin,insulator
Graybar Electric Company, Inc
5910-00-959-3328 INTERCHANGEABLE
Capacitor,fixed,plastic Dielectr
5310-01-024-3109Z098002364 INTERCHANGEABLE
Nut,plain,hexagon
Prestolite Electric Inc
5330-01-027-19655728 INTERCHANGEABLE
Gasket
Pentair Filtration Solutions, Llc
Cross-Reference Index
Part NumberManufacturer
2364 Microwave Devices Inc (USA)
RF0143 PRIMARY Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector (USA)
572-8 Microwave Devices Inc (USA)
RF0143B Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector (USA)
Related Parts
5130-00-113-4960INTERCHANGEABLE
NUT RUNNER AND SCREWDRIVER,PNEUM
41PC17TSQ4
5340-00-193-3632INTERCHANGEABLE
STRAP,RETAINING
2364
2520-00-350-2644INTERCHANGEABLE
SPRING
6680-00-403-5965INTERCHANGEABLE
SHAFT ASSEMBLY,FLEXIBLE
6518-110-136
5950-00-474-5610INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
661178
4920-00-708-3056INTERCHANGEABLE
LEG ASSEMBLY,STAND,LONG
2364
5975-00-782-1118INTERCHANGEABLE
PIN,INSULATOR
5728
5910-00-959-3328INTERCHANGEABLE
CAPACITOR,FIXED,PLASTIC DIELECTR
5310-01-024-3109INTERCHANGEABLE
NUT,PLAIN,HEXAGON
Z098002364
5330-01-027-1965INTERCHANGEABLE
GASKET
5728
6105-01-061-2768INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
5728
5945-01-223-7409INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
1800-2364

Frequently Asked Questions

What is NSN 5985-00-617-3540?

NSN 5985-00-617-3540 is a Coupler,directional, manufactured by Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-617-3540?

NSN 5985-00-617-3540 has 4 cross-referenced part numbers: 2364 (Microwave Devices Inc), RF0143 (Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector), 572-8 (Microwave Devices Inc), RF0143B (Lax Electronics, Inc. Dba Automatic Connector Div Automatic Connector).

What NSN replaces 5985-00-617-3540?

There are 12 known substitutes for 5985-00-617-3540: 5130-00-113-4960, 5340-00-193-3632, 2520-00-350-2644 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RF0143?

Key specifications for RF0143: Overall Length: 6.219 INCHES NOMINAL IN; Overall Height: 2.688 INCHES NOMINAL IN; Unit Type: TRANSMISSION LINE; Terminal Fitting Controlling Agency: MIL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-617-3540 still in active supply?

NSN 5985-00-617-3540 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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