PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HJ-0.75KCoupler,directional

Merrimac Industries, Inc · NSN 5985-01-055-8318 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-055-8318 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-055-8318. Primary manufacturer part number: HJ-0.75K.
Features
  • Coupler,directional — FSC 5985
  • Terminal Fitting Controlling Agency: JEDS
  • Identifying Number: TERMINAL FITTING TYPE N
  • Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING
  • Power Loss in Decibels: 30.0
  • Design Type: UNIDIRECTIONAL
  • Radio Frequency Rating: 0.5 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM
  • Unit Type: TRANSMISSION LINE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-01-055-8318, 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 Merrimac Industries, Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-055-8318
Primary Part NumberHJ-0.75K
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMerrimac Industries, Inc
StatusACTIVE
Terminal Fitting Controlling AgencyJEDS
Identifying NumberTERMINAL FITTING TYPE N
Usage DesignMAIN LINE AND SECONDARY LINE TERMINAL FITTING
Power Loss in Decibels30.0
Design TypeUNIDIRECTIONAL
Radio Frequency Rating0.5 GIGAHERTZ MINIMUM AND 1.0 GIGAHERTZ MAXIMUM
Unit TypeTRANSMISSION LINE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-370-262141527 INTERCHANGEABLE
Transformer,power
Freed Transformer Co
2530-01-066-0138315-1507 INTERCHANGEABLE
Deflector,dirt and Liquid
Stemco Inc Sub of Coltec Industries Inc
7025-01-563-6295403080 INTERCHANGEABLE
Printer,automatic Data Processin
Ricoh Americas Corporation
Cross-Reference Index
Part NumberManufacturer
HJ-0.75K PRIMARY Merrimac Industries, Inc (USA)
403-080 Plath Gmbh & Co. Kg (DEU)
Related Parts
5950-00-370-2621INTERCHANGEABLE
TRANSFORMER,POWER
41527
2530-01-066-0138INTERCHANGEABLE
DEFLECTOR,DIRT AND LIQUID
315-1507
7025-01-563-6295INTERCHANGEABLE
PRINTER,AUTOMATIC DATA PROCESSIN
403080

Frequently Asked Questions

What is NSN 5985-01-055-8318?

NSN 5985-01-055-8318 is a Coupler,directional, manufactured by Merrimac Industries, Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-055-8318?

NSN 5985-01-055-8318 has 2 cross-referenced part numbers: HJ-0.75K (Merrimac Industries, Inc), 403-080 (Plath Gmbh & Co. Kg).

What NSN replaces 5985-01-055-8318?

There are 3 known substitutes for 5985-01-055-8318: 5950-00-370-2621, 2530-01-066-0138, 7025-01-563-6295. Verify interchangeability with system specifications before substitution.

What are the specifications of HJ-0.75K?

Key specifications for HJ-0.75K: Overall Width: 2.330 INCHES MAXIMUM IN; Terminal Fitting Controlling Agency: JEDS; Identifying Number: TERMINAL FITTING TYPE N; Usage Design: MAIN LINE AND SECONDARY LINE TERMINAL FITTING. 10 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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