PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

128SCAV650-1Waveguide Assembly

Northrop Grumman Systems Corporation · NSN 5985-01-008-3578 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-008-3578 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-008-3578. Primary manufacturer part number: 128SCAV650-1.
Features
  • Waveguide Assembly — FSC 5985
  • Flange Inside Diameter: 0.485 INCHES MINIMUM AND 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM FIRST FLANGE0.515 INCHES MAXIMUM FIRST FLANGE IN
  • Flange Quantity: 22
  • Waveguide Outside Width: 0.358 INCHES MINIMUM AND 0.358 INCHES MINIMUM AND 0.362 INCHES MAXIMUM0.362 INCHES MAXIMUM IN
  • Style Designator: STRAIGHT TYPE
  • Voltage Standing Wave Ratio: 1.151.15
  • Flange Style: COVER TYPE SECOND FLANGE
  • Flange Outside Width: 0.745 INCHES MINIMUM AND 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM SECOND FLANGE0.755 INCHES MAXIMUM SECOND FLANGE IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-01-008-3578, 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 Northrop Grumman Systems Corporation. Government technical data includes 30 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 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
NSN5985-01-008-3578
Primary Part Number128SCAV650-1
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Flange Inside Diameter0.485 INCHES MINIMUM AND 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM FIRST FLANGE0.515 INCHES MAXIMUM FIRST FLANGE IN
Flange Quantity22
Waveguide Outside Width0.358 INCHES MINIMUM AND 0.358 INCHES MINIMUM AND 0.362 INCHES MAXIMUM0.362 INCHES MAXIMUM IN
Style DesignatorSTRAIGHT TYPE
Voltage Standing Wave Ratio1.151.15
Flange StyleCOVER TYPE SECOND FLANGE
Flange Outside Width0.745 INCHES MINIMUM AND 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM SECOND FLANGE0.755 INCHES MAXIMUM SECOND FLANGE IN
FSC Application DataANTENNAS,WAVEGUIDES AND RELATED EQUIP.
Flange Outside Width0.735 INCHES MINIMUM AND 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM FIRST FLANGE0.765 INCHES MAXIMUM FIRST FLANGE IN
Flange Outside Height0.745 INCHES MINIMUM AND 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM SECOND FLANGE0.755 INCHES MAXIMUM SECOND FLANGE IN
Thread DirectionRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIESRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
Flange Inside Height0.139 INCHES MINIMUM AND 0.139 INCHES MINIMUM AND 0.141 INCHES MAXIMUM FIRST FLANGE0.141 INCHES MAXIMUM FIRST FLANGE IN
Waveguide Length5.020 INCHES NOMINAL IN
Flange Outside Height0.735 INCHES MINIMUM AND 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM FIRST FLANGE0.765 INCHES MAXIMUM FIRST FLANGE IN
Flange Inside Width0.362 INCHES MINIMUM AND 0.362 INCHES MINIMUM AND 0.364 INCHES MAXIMUM SECOND FLANGE0.364 INCHES MAXIMUM SECOND FLANGE IN
Flange Inside Height0.222 INCHES MINIMUM AND 0.222 INCHES MINIMUM AND 0.224 INCHES MAXIMUM SECOND FLANGE0.224 INCHES MAXIMUM SECOND FLANGE IN
Insertion Loss in Decibels0.500.50
Flange Depth0.182 INCHES MINIMUM AND 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM SECOND FLANGE0.192 INCHES MAXIMUM SECOND FLANGE IN
FlexibilityFLEXIBLE SINGLE TUBING SEGMENT
Flange Depth0.195 INCHES MINIMUM AND 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM FIRST FLANGE0.225 INCHES MAXIMUM FIRST FLANGE IN
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENTSEAMLESS SINGLE TUBING SEGMENT
Thread Class2B FIRST FLANGE ALL CONNECTION FACILITIES2B FIRST FLANGE ALL CONNECTION FACILITIES
Flange StyleCHOKE TYPE FIRST FLANGE
Flange Inside Width0.279 INCHES MINIMUM AND 0.279 INCHES MINIMUM AND 0.282 INCHES MAXIMUM FIRST FLANGE0.282 INCHES MAXIMUM FIRST FLANGE IN
Flange Connecting Facility and Quantity4 THREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES4 THREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES
Flange Connecting Facility and Quantity4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES
Waveguide Outside Height0.218 INCHES MINIMUM AND 0.218 INCHES MINIMUM AND 0.222 INCHES MAXIMUM0.222 INCHES MAXIMUM IN
Waveguide Inside Width0.279 INCHES MINIMUM AND 0.279 INCHES MINIMUM AND 0.282 INCHES MAXIMUM0.282 INCHES MAXIMUM IN
Nominal Thread Size0.112 INCHES FIRST FLANGE ALL CONNECTION FACILITIES0.112 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) FIRST FLANGE ALL CONNECTION FACILITIES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5310-00-008-2097117267 INTERCHANGEABLE
Washer,flat
Cummins Inc.
5961-00-959-4920 INTERCHANGEABLE
Transistor
5985-01-064-8180TS-41115 INTERCHANGEABLE
Waveguide Assembly
Ward Leonard Ct Llc
6640-01-250-1925 INTERCHANGEABLE
Pipet,nonvolumetric
Cross-Reference Index
Part NumberManufacturer
128SCAV650-1 Northrop Grumman Systems Corporation (USA)
128SCAV650-1 PRIMARY Northrop Grumman Systems Corporation (USA)
TS41115 Microwave Engineering Corporation (USA)
117267 Litton Systems Inc Airtron Div (USA)
117267 Frontgrade Technologies Inc. (USA)
Related Parts
5310-00-008-2097INTERCHANGEABLE
WASHER,FLAT
117267
5961-00-959-4920INTERCHANGEABLE
TRANSISTOR
5985-01-064-8180INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
TS-41115
6640-01-250-1925INTERCHANGEABLE
PIPET,NONVOLUMETRIC

Frequently Asked Questions

What is NSN 5985-01-008-3578?

NSN 5985-01-008-3578 is a Waveguide Assembly, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-008-3578?

NSN 5985-01-008-3578 has 5 cross-referenced part numbers: 128SCAV650-1 (Northrop Grumman Systems Corporation), 128SCAV650-1 (Northrop Grumman Systems Corporation), TS41115 (Microwave Engineering Corporation), 117267 (Litton Systems Inc Airtron Div), 117267 (Frontgrade Technologies Inc.).

What NSN replaces 5985-01-008-3578?

There are 4 known substitutes for 5985-01-008-3578: 5310-00-008-2097, 5961-00-959-4920, 5985-01-064-8180 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 128SCAV650-1?

Key specifications for 128SCAV650-1: Flange Inside Diameter: 0.485 INCHES MINIMUM AND 0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM FIRST FLANGE0.515 INCHES MAXIMUM FIRST FLANGE IN; Flange Quantity: 22; Waveguide Outside Width: 0.358 INCHES MINIMUM AND 0.358 INCHES MINIMUM AND 0.362 INCHES MAXIMUM0.362 INCHES MAXIMUM IN; Style Designator: STRAIGHT TYPE. 30 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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