PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4051-10NCoupler,directional

Marc Alan Group the, Inc · NSN 5985-01-034-6821 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-034-6821 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-034-6821. Primary manufacturer part number: 4051-10N.
Features
  • Coupler,directional — FSC 5985
  • Radio Frequency Rating: 1.0 GIGAHERTZ MINIMUM AND 12.4 GIGAHERTZ MAXIMUM
  • Test Data Document: 81349-MIL-C-15370 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Power Loss in Decibels: 10.0
  • Design Type: BIDIRECTIONAL
  • Unit Type: COAXIAL LINE
  • 5 verified cross-references
  • Primary manufacturer: Marc Alan Group the, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coupler,directional, cataloged under National Stock Number 5985-01-034-6821, 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 Marc Alan Group the, Inc. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN5985-01-034-6821
Primary Part Number4051-10N
Item NameCoupler,directional
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMarc Alan Group the, Inc
StatusCANCELLED
Radio Frequency Rating1.0 GIGAHERTZ MINIMUM AND 12.4 GIGAHERTZ MAXIMUM
Test Data Document81349-MIL-C-15370 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Power Loss in Decibels10.0
Design TypeBIDIRECTIONAL
Unit TypeCOAXIAL LINE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5985-01-036-1241 INTERCHANGEABLE
Coupler,directional
5985-01-042-2500 INTERCHANGEABLE
Coupler,directional
5985-01-065-4429 INTERCHANGEABLE
Coupler,directional
5985-01-081-3958 INTERCHANGEABLE
Coupler,directional
5985-01-096-5284 INTERCHANGEABLE
Coupler,directional
5985-01-128-6982 INTERCHANGEABLE
Coupler,directional
5985-01-142-8187 INTERCHANGEABLE
Coupler,directional
5985-01-142-8188 INTERCHANGEABLE
Coupler,directional
5985-01-144-1194 INTERCHANGEABLE
Coupler,directional
5985-01-144-1195 INTERCHANGEABLE
Coupler,directional
Cross-Reference Index
Part NumberManufacturer
4051-10N Marc Alan Group the, Inc (USA)
3202B10 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
MIL-DTL-15370/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M15370/3-038 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-C-15370/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5985-01-036-1241INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-042-2500INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-065-4429INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-081-3958INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-096-5284INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-128-6982INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-142-8187INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-142-8188INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-144-1194INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-144-1195INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-209-9164INTERCHANGEABLE
COUPLER,DIRECTIONAL
5985-01-217-1759INTERCHANGEABLE
COUPLER,DIRECTIONAL

Frequently Asked Questions

What is NSN 5985-01-034-6821?

NSN 5985-01-034-6821 is a Coupler,directional, manufactured by Marc Alan Group the, Inc, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-01-034-6821?

NSN 5985-01-034-6821 has 5 cross-referenced part numbers: 4051-10N (Marc Alan Group the, Inc), 3202B10 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), MIL-DTL-15370/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M15370/3-038 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-C-15370/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5985-01-034-6821?

There are 12 known substitutes for 5985-01-034-6821: 5985-01-036-1241, 5985-01-042-2500, 5985-01-065-4429 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4051-10N?

Key specifications for 4051-10N: Overall Width: 1.980 INCHES MAXIMUM IN; Radio Frequency Rating: 1.0 GIGAHERTZ MINIMUM AND 12.4 GIGAHERTZ MAXIMUM; Test Data Document: 81349-MIL-C-15370 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Overall Length: 5.440 INCHES MAXIMUM IN. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-01-034-6821 still in active supply?

NSN 5985-01-034-6821 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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