PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

635-2Waveguide Assembly

Waveline Inc · NSN 5985-00-425-3720 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-425-3720 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-425-3720. Primary manufacturer part number: 635-2.
Features
  • Waveguide Assembly — FSC 5985
  • Waveguide Offset Distance: 0.926 INCHES NOMINAL IN
  • Waveguide Inside Height: 0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM IN
  • Surface Treatment: ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
  • Flange Connecting Facility and Quantity: 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES
  • Flange Style: COVER TYPE ALL FLANGES
  • Waveguide Outside Height: 0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
  • FSC Application Data: ANTENNAS,WAVEGUIDES AND RELATED EQUIPMENT
Applications
  • Applications requiring Aluminum All Tubing Segment and Flange construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-425-3720, 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 Waveline Inc. Government technical data includes 24 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-425-3720
Primary Part Number635-2
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerWaveline Inc
StatusACTIVE
Waveguide Offset Distance0.926 INCHES NOMINAL IN
Waveguide Inside Height0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM IN
Surface TreatmentENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
Flange Connecting Facility and Quantity4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES
Flange StyleCOVER TYPE ALL FLANGES
Waveguide Outside Height0.496 INCHES MINIMUM AND 0.504 INCHES MAXIMUM IN
FSC Application DataANTENNAS,WAVEGUIDES AND RELATED EQUIPMENT
Flange Inside Height0.503 INCHES MINIMUM AND 0.506 INCHES MAXIMUM ALL FLANGES IN
Flange Quantity2
Waveguide Outside Width0.996 INCHES MINIMUM AND 1.004 INCHES MAXIMUM IN
Waveguide Inside Width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM IN
Waveguide Longer Offset Distance2.000 INCHES NOMINAL IN
Flange Outside Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM ALL FLANGES IN
FlexibilityRIGID ALL TUBING SEGMENT
Voltage Standing Wave Ratio1.05
MaterialALUMINUM ALL TUBING SEGMENT AND FLANGE
Tubing Wall Construction StyleSEAMLESS ALL TUBING SEGMENT
Bend Angle in Deg90.0 SINGLE BEND E-PLANE
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM ALL FLANGES IN
Flange Connecting Hole Diameter0.169 INCHES MINIMUM AND 0.172 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN
Flange Outside Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM ALL FLANGES IN
Style DesignatorELBOW TYPE
Flange Inside Width1.003 INCHES MINIMUM AND 1.006 INCHES MAXIMUM ALL FLANGES IN
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5960-00-038-1637 INTERCHANGEABLE
Electron Tube
6685-00-075-686738D0TA INTERCHANGEABLE
Thermometer,self-Indicating,bime
Sigma Products & Mfg
6150-00-132-0490177 INTERCHANGEABLE
Lead,storage Battery
Elliott Machine Works Inc
2520-00-142-9250301466-23 INTERCHANGEABLE
Transmission,mechanical,vehicula
Dana Corp Spicer Transmission Div
4730-00-250-7953 INTERCHANGEABLE
Elbow,tube
9540-00-555-0819 INTERCHANGEABLE
Beam,structural
5305-00-616-2598 INTERCHANGEABLE
Screw,machine
5960-00-752-0465 INTERCHANGEABLE
Electron Tube
5999-01-167-32456-35-2 INTERCHANGEABLE
Contact Kit,electrical
Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc
6210-01-202-69536352 INTERCHANGEABLE
Fixture,lighting
Lightolier Inc
Cross-Reference Index
Part NumberManufacturer
635-2 PRIMARY Waveline Inc (USA)
Related Parts
5960-00-038-1637INTERCHANGEABLE
ELECTRON TUBE
6685-00-075-6867INTERCHANGEABLE
THERMOMETER,SELF-INDICATING,BIME
38D0TA
6150-00-132-0490INTERCHANGEABLE
LEAD,STORAGE BATTERY
177
2520-00-142-9250INTERCHANGEABLE
TRANSMISSION,MECHANICAL,VEHICULA
301466-23
4730-00-250-7953INTERCHANGEABLE
ELBOW,TUBE
9540-00-555-0819INTERCHANGEABLE
BEAM,STRUCTURAL
5305-00-616-2598INTERCHANGEABLE
SCREW,MACHINE
5960-00-752-0465INTERCHANGEABLE
ELECTRON TUBE
5999-01-167-3245INTERCHANGEABLE
CONTACT KIT,ELECTRICAL
6-35-2
6210-01-202-6953INTERCHANGEABLE
FIXTURE,LIGHTING
6352
2940-01-206-0897INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
8N6309
4730-01-599-2685INTERCHANGEABLE
CLAMP,HOSE
6352

Frequently Asked Questions

What is NSN 5985-00-425-3720?

NSN 5985-00-425-3720 is a Waveguide Assembly, manufactured by Waveline Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-425-3720?

NSN 5985-00-425-3720 has 1 cross-referenced part number: 635-2 (Waveline Inc).

What NSN replaces 5985-00-425-3720?

There are 12 known substitutes for 5985-00-425-3720: 5960-00-038-1637, 6685-00-075-6867, 6150-00-132-0490 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 635-2?

Key specifications for 635-2: Waveguide Offset Distance: 0.926 INCHES NOMINAL IN; Waveguide Inside Height: 0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM IN; Surface Treatment: ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES; Flange Connecting Facility and Quantity: 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES. 24 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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