PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8557P2Attenuator,fixed

General Microwave Corporation Div Kratos Microwave Electronics · NSN 5985-01-054-4746 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-054-4746 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-054-4746. Primary manufacturer part number: 8557P2.
Features
  • Attenuator,fixed — FSC 5985
  • Application Design: TRANSMISSION LINETRANSMISSION LINE
  • Power Rating: 2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 500.0 WATTS PEAK500.0 WATTS PEAK
  • Coaxial Connector Series Designation: NN
  • Frequency Range: 0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM18.000 GIGAHERTZ MAXIMUM
  • Voltage Standing Wave Ratio Frequency Range: +0.0 TO 4.0 GIGAHERTZ AND +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ+12.4 TO 18.0 GIGAHERTZ
  • Overall Diameter: 0.810 INCHES MAXIMUM0.810 INCHES MAXIMUM IN
  • Rf Signal Attenuation in Decibels: 6.06.0
Applications
  • Applications requiring Steel Corrosion Resisting Body construction
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-054-4746, 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 General Microwave Corporation Div Kratos Microwave Electronics. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-054-4746
Primary Part Number8557P2
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerGeneral Microwave Corporation Div Kratos Microwave Electronics
StatusACTIVE
Application DesignTRANSMISSION LINETRANSMISSION LINE
Power Rating2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 500.0 WATTS PEAK500.0 WATTS PEAK
Coaxial Connector Series DesignationNN
Frequency Range0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM18.000 GIGAHERTZ MAXIMUM
Voltage Standing Wave Ratio Frequency Range+0.0 TO 4.0 GIGAHERTZ AND +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ+12.4 TO 18.0 GIGAHERTZ
Overall Diameter0.810 INCHES MAXIMUM0.810 INCHES MAXIMUM IN
Rf Signal Attenuation in Decibels6.06.0
Connection Type Per FunctionFEMALE INPUT AND FEMALE INPUT AND MALE OUTPUTMALE OUTPUT
Output Impedance Rating in Ohms50.050.0
Terminal Type and Quantity2 CONNECTOR2 CONNECTOR
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACEROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Input Impedance Rating in Ohms50.050.0
MaterialSTEEL CORROSION RESISTING BODY
Mounting MethodCONNECTORCONNECTOR
Voltage Standing Wave Ratio1.15 AND 1.15 AND 1.20 AND 1.20 AND 1.25 AND 1.25 AND 1.401.40
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3110-00-198-1007QA62605 INTERCHANGEABLE
Roller,bearing
Timken Aerospace, Inc Dba Torrington Product
4730-00-289-5943973B197H01 INTERCHANGEABLE
Plug,pipe
Northrop Grumman Systems Corporation Dba Electronic Systems
5360-00-546-09342547999 INTERCHANGEABLE
Spring,helical,compression
Kitco Llc
5330-01-330-96833886 INTERCHANGEABLE
Retainer,packing
Howell Laboratories Inc Dba Howell Laboratories Inc
Cross-Reference Index
Part NumberManufacturer
388-6 Cinch Connectivity Solutions Inc (USA)
8557P2 PRIMARY General Microwave Corporation Div Kratos Microwave Electronics (USA)
388-6DB Cinch Connectivity Solutions Inc (USA)
1 Spectrum Control Inc Div Weinschel (USA)
Related Parts
3110-00-198-1007INTERCHANGEABLE
ROLLER,BEARING
QA62605
4730-00-289-5943INTERCHANGEABLE
PLUG,PIPE
973B197H01
5360-00-546-0934INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
2547999
5330-01-330-9683INTERCHANGEABLE
RETAINER,PACKING
3886

Frequently Asked Questions

What is NSN 5985-01-054-4746?

NSN 5985-01-054-4746 is a Attenuator,fixed, manufactured by General Microwave Corporation Div Kratos Microwave Electronics, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-054-4746?

NSN 5985-01-054-4746 has 4 cross-referenced part numbers: 388-6 (Cinch Connectivity Solutions Inc), 8557P2 (General Microwave Corporation Div Kratos Microwave Electronics), 388-6DB (Cinch Connectivity Solutions Inc), 1 (Spectrum Control Inc Div Weinschel).

What NSN replaces 5985-01-054-4746?

There are 4 known substitutes for 5985-01-054-4746: 3110-00-198-1007, 4730-00-289-5943, 5360-00-546-0934 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 8557P2?

Key specifications for 8557P2: Application Design: TRANSMISSION LINETRANSMISSION LINE; Power Rating: 2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 500.0 WATTS PEAK500.0 WATTS PEAK; Coaxial Connector Series Designation: NN; Frequency Range: 0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM18.000 GIGAHERTZ MAXIMUM. 16 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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