PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

581R955H01Coupler,directional

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 5985-01-140-8073 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-140-8073 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-140-8073. Primary manufacturer part number: 581R955H01.
Features
  • Coupler,directional — FSC 5985
  • Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING
  • Unit Type: COAXIAL LINE OR TRANSMISSION LINE
  • Terminal Fitting Controlling Agency: NARDA MICROWAVE CORP
  • Design Type: BIDIRECTIONAL
  • 3 verified cross-references
  • Primary manufacturer: Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-01-140-8073, 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 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-01-140-8073
Primary Part Number581R955H01
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusCANCELLED
Usage DesignMAIN LINE AND SECONDARY LINE TERMINAL FITTING
Unit TypeCOAXIAL LINE OR TRANSMISSION LINE
Terminal Fitting Controlling AgencyNARDA MICROWAVE CORP
Design TypeBIDIRECTIONAL
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5133-00-189-9279 INTERCHANGEABLE
Drill,twist
5136-00-237-82727236 INTERCHANGEABLE
Die,rethreading
Stanley Tools Div of Stanley Works
4730-00-243-987324115 INTERCHANGEABLE
Tee,pipe to Hose
United States Plastic Corp
3455-00-250-0766 INTERCHANGEABLE
Cutter,milling,end
5961-01-005-035904440032-001 INTERCHANGEABLE
Transistor
Getronics Government Solutions Llc
Cross-Reference Index
Part NumberManufacturer
313306 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
581R955H01 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
24121 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
Related Parts
5133-00-189-9279INTERCHANGEABLE
DRILL,TWIST
5136-00-237-8272INTERCHANGEABLE
DIE,RETHREADING
7236
4730-00-243-9873INTERCHANGEABLE
TEE,PIPE TO HOSE
24115
3455-00-250-0766INTERCHANGEABLE
CUTTER,MILLING,END
5961-01-005-0359INTERCHANGEABLE
TRANSISTOR
04440032-001

Frequently Asked Questions

What is NSN 5985-01-140-8073?

NSN 5985-01-140-8073 is a Coupler,directional, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-01-140-8073?

NSN 5985-01-140-8073 has 3 cross-referenced part numbers: 313306 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 581R955H01 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 24121 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq).

What NSN replaces 5985-01-140-8073?

There are 5 known substitutes for 5985-01-140-8073: 5133-00-189-9279, 5136-00-237-8272, 4730-00-243-9873 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 581R955H01?

Key specifications for 581R955H01: Overall Height: 0.375 INCHES NOMINAL IN; Overall Width: 1.156 INCHES NOMINAL IN; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING; Unit Type: COAXIAL LINE OR TRANSMISSION LINE. 7 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-01-140-8073 still in active supply?

NSN 5985-01-140-8073 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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