PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

70401Attenuator,variable

Waveline Inc · NSN 5985-00-575-4338 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-575-4338 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-575-4338. Primary manufacturer part number: 70401.
Features
  • Attenuator,variable — FSC 5985
  • Attenuation Variation Method: CONTINUOUS
  • Overall Attenuation Range in Decibels: +0.0 TO 20.0
  • Waveguide Flange Type: CHOKE
  • Mounting Facility Pattern: FOUR POSITION RECTANGULAR
  • Application Design: WAVEGUIDE
  • Operating Temp Range: -55.0 TO 55.0 CELSIUS DEGC
  • Body Style: WAVEGUIDE TYPE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-575-4338, 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 Waveline Inc. Government technical data includes 15 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-575-4338
Primary Part Number70401
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerWaveline Inc
StatusACTIVE
Attenuation Variation MethodCONTINUOUS
Overall Attenuation Range in Decibels+0.0 TO 20.0
Waveguide Flange TypeCHOKE
Mounting Facility PatternFOUR POSITION RECTANGULAR
Application DesignWAVEGUIDE
Operating Temp Range-55.0 TO 55.0 CELSIUS DEGC
Body StyleWAVEGUIDE TYPE
Terminal Type and Quantity2 FLANGE
Insertion Loss at Minimum Attenuation in Maximum Decibels0.5
Adjustment Device Type and Quantity1 KNOB
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S)
Voltage Standing Wave Ratio1.20
Power Rating500.0 MILLIWATTS AVERAGE
Frequency Range12.400 GIGAHERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
Unthreaded Mounting Hole Diameter0.144 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5962-00-172-11882868546-2 INTERCHANGEABLE
Microcircuit,linear
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
6640-00-255-830970-401 INTERCHANGEABLE
Table,vibration Isolation
Lansing Instrument Corp
6625-00-503-4531 INTERCHANGEABLE
Meter,arbitrary Scale
5950-00-799-9608 INTERCHANGEABLE
Demagnetizer
5935-01-165-911270-401 INTERCHANGEABLE
Socket,plug-in Electronic Compon
Se Relays Llc (magnecraft) Div Se Relays Llc (magnecraft)
1710-01-315-046870401 INTERCHANGEABLE
Ring,sealing Outer
Curtiss-Wright Flow Control Service, Llc Dba Engineered Arresting Systems - Esco Div Cw Flow Control Svc Llc Dba
4920-01-520-853370401 INTERCHANGEABLE
Case,electrical-Electronic Test
Melmat Inc
6625-01-675-498270401 INTERCHANGEABLE
Meter,electrical Frequency
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
Cross-Reference Index
Part NumberManufacturer
70401 PRIMARY Waveline Inc (USA)
128SCSEA721-1 Northrop Grumman Systems Corporation (USA)
128SCSEA721-1 Northrop Grumman Systems Corporation (USA)
Related Parts
5962-00-172-1188INTERCHANGEABLE
MICROCIRCUIT,LINEAR
2868546-2
6640-00-255-8309INTERCHANGEABLE
TABLE,VIBRATION ISOLATION
70-401
6625-00-503-4531INTERCHANGEABLE
METER,ARBITRARY SCALE
5950-00-799-9608INTERCHANGEABLE
DEMAGNETIZER
5935-01-165-9112INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
70-401
1710-01-315-0468INTERCHANGEABLE
RING,SEALING OUTER
70401
4920-01-520-8533INTERCHANGEABLE
CASE,ELECTRICAL-ELECTRONIC TEST
70401
6625-01-675-4982INTERCHANGEABLE
METER,ELECTRICAL FREQUENCY
70401

Frequently Asked Questions

What is NSN 5985-00-575-4338?

NSN 5985-00-575-4338 is a Attenuator,variable, manufactured by Waveline Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-575-4338?

NSN 5985-00-575-4338 has 3 cross-referenced part numbers: 70401 (Waveline Inc), 128SCSEA721-1 (Northrop Grumman Systems Corporation), 128SCSEA721-1 (Northrop Grumman Systems Corporation).

What NSN replaces 5985-00-575-4338?

There are 8 known substitutes for 5985-00-575-4338: 5962-00-172-1188, 6640-00-255-8309, 6625-00-503-4531 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 70401?

Key specifications for 70401: Overall Width: 1.312 INCHES NOMINAL IN; Attenuation Variation Method: CONTINUOUS; Overall Attenuation Range in Decibels: +0.0 TO 20.0; Waveguide Flange Type: CHOKE. 18 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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