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Fixed Attenuator

NSN: 5985-00-962-8403 | Model: 318-200-111
ITAR Registered seal

A device for reducing the strength of an alternating current signal by a fixed or predetermined amount, without causing appreciable signal distortion, by maintaining correct impedance match.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled (Code Q)
Application Design
Transmission line
Body Material
Body Style
1b round, terminal/terminals in opposite surface
Body Surface Treatment
Silver plated
Overall Length
Between 2.630 inches and 2.750 inches
Overall Diameter
0.830 inches
Operating Tempurature Range
-55.0/+125.0 degrees celsius
Voltage Standing Wave Ratio
Input Impedance Rating In Ohms
Output Impedance Rating In Ohms
Coaxial Connector Series Designation
Power Rating
2.0 watts average and 2.0 kilowatts peak
Rf Signal Attenuation In Decibels
Voltage Standing Wave Ratio Frequency Range
+0.0/+4.5 gigahertz
Attenuation Accuracy Reference Frequency
4.5 gigahertz
Attenuation Accuracy In Decibels
Unpackaged Unit Weight
2.800 ounces
Mounting Method
Terminal Type And Quantity
2 connector
Frequency Range
Between 0.000 hertz and 4.500 gigahertz
Precious Material And Location
External surfaces silver
Precious Material
Fsc Application Data
Antennas, waveguides, and related equipment
Recent Solicitations
Solicitation Return by Date Buyer Code Quantity
SPE7M520T7718 2020-02-10 PMCM4 5 EA
SPE7M520T1371 2019-10-28 PMCM4 5 EA

Inventory Check

The last inventory check on this NSN was done on 09/28/2022. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 1

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 5985-00-962-8403 Datasheet

Supply Class (FSC):
Related Equipment Waveguides Antennas
Cross Reference:
  • 318-200-111
  • AB-20N
  • MDC1078B-20
  • 912110020
Cage Codes:
  • Interstate Electronics Corporation (CAGE 07421)
  • Microlab/fxr (CAGE 00929)
  • Tech Devices, Inc. Dal (CAGE 52335)
  • Joslyn Products (CAGE 23663)
Schedule B & Trade:
  • Schedule B: 8529109000 (NAICS 334220)

    Antenna & antenna reflectors of all kinds; parts suitable for use soley or principally w/ apparatus of heading 8525 to 8528, nesoi

  • SITC: 76493

    Parts of television receivers, radiobroadcast receivers, transmission apparatus for radio telephony, telegraphy, broadcasting or television etc.

  • End Use: 21400

    Telecommunications equipment


P - Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of federal standard 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.


S - Item contains silver.


- Represents items with no adp components


- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    060535 - Aerial/antennas directional

  • WCC:

    723 - Radio parts and equipment, excluding tubes packed separately

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
  • AAC
  • Quantity per pack
  • Unit of Measure
  • Shelf Life
  • Classification Control
  • Repariability
    Item requires special handling or condemnation procedures for specific reasons, such as precious metal content, high dollar value, critical material, or hazardous materiel. refer to appropriate manuals or directives for specific instructions.

Questions & Answers:

What are the historical prices recorded for this stock number?
Historical data shows pricing from $648.12 to $1,080.20..
Does NSN 5985-00-962-8403 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Department Of The Army, Department Of The Air Force, U.s. Marine Corps, Department Of The Navy, Slovenia, Spain, Saudi Arabia, Malaysia, Canada, Republic Of Korea, Netherlands, Portugal, Italy, Greece, and Nato Maintenance and Supply Agency
What is the NIIN of NSN 5985-00-962-8403?
009628403 or 00-962-8403
Does NSN 5985-00-962-8403 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5985-00-962-8403?
Solicitation SPE7M520T7718 for qty 5 on 01/31/2020
When was this national stock number assigned to the federal catalog?
Jan 01, 1963