PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

263-50Attenuator,fixed

Cinch Connectivity Solutions Inc · NSN 5985-01-277-4927 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-277-4927 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-277-4927. Primary manufacturer part number: 263-50.
Features
  • Attenuator,fixed — FSC 5985
  • Terminal Type and Quantity: 2 CONNECTOR
  • Voltage Standing Wave Ratio Frequency Range: +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ
  • Mounting Method: CONNECTOR
  • Coaxial Connector Series Designation: SMA
  • Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
  • Power Rating: 2.0 WATTS AVERAGE
  • Operating Temp Range: -65.0 TO 125.0 CELSIUS DEGC
Applications
  • Applications requiring Steel Corrosion Resisting Body construction
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-277-4927, 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 Cinch Connectivity Solutions Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 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
NSN5985-01-277-4927
Primary Part Number263-50
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerCinch Connectivity Solutions Inc
StatusACTIVE
Terminal Type and Quantity2 CONNECTOR
Voltage Standing Wave Ratio Frequency Range+0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ
Mounting MethodCONNECTOR
Coaxial Connector Series DesignationSMA
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Power Rating2.0 WATTS AVERAGE
Operating Temp Range-65.0 TO 125.0 CELSIUS DEGC
Rf Signal Attenuation in Decibels50.0
Frequency Range0.000 HERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
Attenuation Accuracy in Decibels-1.50 TO 1.50
Input Impedance Rating in Ohms50.0
Overall Diameter0.360 INCHES NOMINAL IN
Attenuation Accuracy Reference Frequency18.0 GIGAHERTZ
Voltage Standing Wave Ratio1.15 AND 1.25 AND 1.35
Output Impedance Rating in Ohms50.0
Application DesignTRANSMISSION LINE
MaterialSTEEL CORROSION RESISTING BODY
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
2825-00-389-975426350 INTERCHANGEABLE
Seat,spring
Dresser Rand Co Terry Corp Steam Turbine Motor and Generator Co a Joint Venture
4820-00-508-289012701 INTERCHANGEABLE
Valve,shuttle
Saf Industries Llc Dba Saf Industries Llc Div Garkenyon
7035-00-978-7590 INTERCHANGEABLE
Rod End,actuator
5365-01-093-149420300 INTERCHANGEABLE
Shim
Moog Inc. Dba Ampac-Isp Corp
Cross-Reference Index
Part NumberManufacturer
263-50 PRIMARY Cinch Connectivity Solutions Inc (USA)
MDC88336-50 Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc (USA)
Related Parts
2825-00-389-9754INTERCHANGEABLE
SEAT,SPRING
26350
4820-00-508-2890INTERCHANGEABLE
VALVE,SHUTTLE
12701
7035-00-978-7590INTERCHANGEABLE
ROD END,ACTUATOR
5365-01-093-1494INTERCHANGEABLE
SHIM
20300

Frequently Asked Questions

What is NSN 5985-01-277-4927?

NSN 5985-01-277-4927 is a Attenuator,fixed, manufactured by Cinch Connectivity Solutions Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-277-4927?

NSN 5985-01-277-4927 has 2 cross-referenced part numbers: 263-50 (Cinch Connectivity Solutions Inc), MDC88336-50 (Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc).

What NSN replaces 5985-01-277-4927?

There are 4 known substitutes for 5985-01-277-4927: 2825-00-389-9754, 4820-00-508-2890, 7035-00-978-7590 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 263-50?

Key specifications for 263-50: Terminal Type and Quantity: 2 CONNECTOR; Voltage Standing Wave Ratio Frequency Range: +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 12.4 GIGAHERTZ AND +12.4 TO 18.0 GIGAHERTZ; Overall Length: 1.490 INCHES NOMINAL IN; Mounting Method: CONNECTOR. 19 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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