PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G300009S3Attenuator,fixed

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5985-00-781-0314 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-781-0314 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-781-0314. Primary manufacturer part number: G300009S3.
Features
  • Attenuator,fixed — FSC 5985
  • Application Design: TRANSMISSION LINE
  • Frequency Sensitivity Attenuation in Decibels: 0.40
  • Rf Signal Attenuation in Decibels: 3.0
  • Overall Diameter: 0.625 INCHES NOMINAL IN
  • Attenuation Accuracy in Decibels: -0.40 TO 0.40
  • Voltage Standing Wave Ratio Frequency Range: +0.0 TO 1.0 GIGAHERTZ AND +1.0 TO 1.5 GIGAHERTZ
  • Output Impedance Rating in Ohms: 50.0
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-00-781-0314, 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 L3harris Technologies, Inc Div Space & Airborne Systems. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 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
NSN5985-00-781-0314
Primary Part NumberG300009S3
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusCANCELLED
Application DesignTRANSMISSION LINE
Frequency Sensitivity Attenuation in Decibels0.40
Rf Signal Attenuation in Decibels3.0
Overall Diameter0.625 INCHES NOMINAL IN
Attenuation Accuracy in Decibels-0.40 TO 0.40
Voltage Standing Wave Ratio Frequency Range+0.0 TO 1.0 GIGAHERTZ AND +1.0 TO 1.5 GIGAHERTZ
Output Impedance Rating in Ohms50.0
Mounting MethodCONNECTOR
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Unpackaged Unit Weight1.500 OUNCES OZ
Coaxial Connector Series DesignationBNC
Connection Type Per FunctionFEMALE INPUT AND MALE OUTPUT
Attenuation Accuracy Reference Frequency1.5 GIGAHERTZ
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Voltage Standing Wave Ratio1.15 AND 1.25
Input Impedance Rating in Ohms50.0
Frequency Range0.000 HERTZ MINIMUM AND 1.500 GIGAHERTZ MAXIMUM
Power Rating2.0 WATTS AVERAGE
Terminal Type and Quantity2 CONNECTOR
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5325-00-106-6405 INTERCHANGEABLE
Grommet,nonmetallic
6920-00-107-1747 INTERCHANGEABLE
Support,shaft
5325-00-200-746252392 INTERCHANGEABLE
Ring,retaining
Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
3455-00-243-9487A814-45L INTERCHANGEABLE
Cutter,milling,angle
F & D Tool Co Inc
2540-00-318-09767417952 INTERCHANGEABLE
Pintle Assembly,towing
U S Army Tank Automotive Command Amsta-Im-Mm
4820-00-375-79764824-935023ALT1PC4-7T010 INTERCHANGEABLE
Disk,valve
Naval Ship Systems Command
5340-00-531-6856AS5587D03 INTERCHANGEABLE
Clamp,loop
Sae International Dba Sae International
5930-00-631-17637553 INTERCHANGEABLE
Switch,rotary Winds
Cole Hersee Company
4030-00-697-0776D8163 INTERCHANGEABLE
Rod,anchor
Joslyn Corp
5985-00-862-3291 INTERCHANGEABLE
Attenuator,fixed
Cross-Reference Index
Part NumberManufacturer
AA-E16 Microlab/fxr Llc (USA)
A403B Caes Systems Llc (USA)
GA810DD3 Northrop Grumman Systems Corporation (USA)
G300009S3 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
755-3DB Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
775-3 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
755-3 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
20-512295-1 General Dynamics Mission Systems, Inc. (USA)
Related Parts
5325-00-106-6405INTERCHANGEABLE
GROMMET,NONMETALLIC
6920-00-107-1747INTERCHANGEABLE
SUPPORT,SHAFT
5325-00-200-7462INTERCHANGEABLE
RING,RETAINING
52392
3455-00-243-9487INTERCHANGEABLE
CUTTER,MILLING,ANGLE
A814-45L
2540-00-318-0976INTERCHANGEABLE
PINTLE ASSEMBLY,TOWING
7417952
4820-00-375-7976INTERCHANGEABLE
DISK,VALVE
4824-935023ALT1PC4-7T010
5340-00-531-6856INTERCHANGEABLE
CLAMP,LOOP
AS5587D03
5930-00-631-1763INTERCHANGEABLE
SWITCH,ROTARY WINDS
7553
4030-00-697-0776INTERCHANGEABLE
ROD,ANCHOR
D8163
5985-00-862-3291INTERCHANGEABLE
ATTENUATOR,FIXED
6625-01-032-1947INTERCHANGEABLE
RESISTOR,DECADE
6510-01-113-3810INTERCHANGEABLE
TOWEL PACK,SURGICAL
7553

Frequently Asked Questions

What is NSN 5985-00-781-0314?

NSN 5985-00-781-0314 is a Attenuator,fixed, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-00-781-0314?

NSN 5985-00-781-0314 has 8 cross-referenced part numbers: AA-E16 (Microlab/fxr Llc), A403B (Caes Systems Llc), GA810DD3 (Northrop Grumman Systems Corporation), G300009S3 (L3harris Technologies, Inc Div Space & Airborne Systems), 755-3DB (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq) and 3 more.

What NSN replaces 5985-00-781-0314?

There are 12 known substitutes for 5985-00-781-0314: 5325-00-106-6405, 6920-00-107-1747, 5325-00-200-7462 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G300009S3?

Key specifications for G300009S3: Application Design: TRANSMISSION LINE; Overall Length: 2.300 INCHES MAXIMUM IN; Frequency Sensitivity Attenuation in Decibels: 0.40; Rf Signal Attenuation in Decibels: 3.0. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-00-781-0314 still in active supply?

NSN 5985-00-781-0314 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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