PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

128308Waveguide Assembly

L3harris Technologies, Inc Div Space & Airborne Systems · NSN 5985-00-754-7512 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-754-7512 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-754-7512. Primary manufacturer part number: 128308.
Features
  • Waveguide Assembly — FSC 5985
  • Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
  • Flange Connecting Facility and Quantity: 4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES
  • Flange Outside Width: 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM ALL FLANGES IN
  • Waveguide Outside Height: 0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN
  • FSC Application Data: ANTENNAS,WAVEGUIDES AND RELATED EQUIP.
  • Flange Inside Width: 1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM ALL FLANGES IN
  • Style Designator: OFFSET BEND TYPE
Applications
  • Applications requiring Aluminum Alloy All Tubing Segment and Flange construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-00-754-7512, 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 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-754-7512
Primary Part Number128308
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerL3harris Technologies, Inc Div Space & Airborne Systems
StatusACTIVE
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR
Flange Connecting Facility and Quantity4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES
Flange Outside Width1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM ALL FLANGES IN
Waveguide Outside Height0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN
FSC Application DataANTENNAS,WAVEGUIDES AND RELATED EQUIP.
Flange Inside Width1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM ALL FLANGES IN
Style DesignatorOFFSET BEND TYPE
Flange Outside Height1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM ALL FLANGES IN
Surface TreatmentCHROMATE AND ENAMEL AND PRIMER ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES
Waveguide Center to Center Distance12.000 INCHES NOMINAL IN
Flange Depth0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM ALL FLANGES IN
Flange Inside Height0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM ALL FLANGES IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES
MaterialALUMINUM ALLOY ALL TUBING SEGMENT AND FLANGE
FlexibilityRIGID ALL TUBING SEGMENT
Flange Inside Diameter1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM ALL FLANGES IN
Flange Quantity2
Waveguide Outside Width1.246 INCHES MINIMUM AND 1.254 INCHES MAXIMUM IN
Flange StyleCHOKE TYPE ALL FLANGES
Waveguide Inside Width1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM IN
Nominal Thread Size0.164 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN
Thread Class2B ALL FLANGES ALL CONNECTION FACILITIES
Thread Quantity Per Inch32 ALL FLANGES ALL CONNECTION FACILITIES
Thread DirectionRIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES
Waveguide Inside Height0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN
Tubing Wall Construction StyleSEAMLESS ALL TUBING SEGMENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6625-00-500-3882 INTERCHANGEABLE
Meter,arbitrary Scale
5985-00-688-7092128305 INTERCHANGEABLE
Waveguide Assembly
L3harris Technologies, Inc Div Space & Airborne Systems
4730-01-514-060612-8308 INTERCHANGEABLE
Adapter,straight,pipe to Tube
R. a. Phillips Industries, Inc. Dba Phillips Industries
Cross-Reference Index
Part NumberManufacturer
128308 PRIMARY L3harris Technologies, Inc Div Space & Airborne Systems (USA)
43140-00670-1 Naval Air Warfare Ctr Aircraft Div (USA)
43140-00670 Naval Air Warfare Ctr Aircraft Div (USA)
Related Parts
6625-00-500-3882INTERCHANGEABLE
METER,ARBITRARY SCALE
5985-00-688-7092INTERCHANGEABLE
WAVEGUIDE ASSEMBLY
128305
4730-01-514-0606INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
12-8308

Frequently Asked Questions

What is NSN 5985-00-754-7512?

NSN 5985-00-754-7512 is a Waveguide Assembly, manufactured by L3harris Technologies, Inc Div Space & Airborne Systems, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-754-7512?

NSN 5985-00-754-7512 has 3 cross-referenced part numbers: 128308 (L3harris Technologies, Inc Div Space & Airborne Systems), 43140-00670-1 (Naval Air Warfare Ctr Aircraft Div), 43140-00670 (Naval Air Warfare Ctr Aircraft Div).

What NSN replaces 5985-00-754-7512?

There are 3 known substitutes for 5985-00-754-7512: 6625-00-500-3882, 5985-00-688-7092, 4730-01-514-0606. Verify interchangeability with system specifications before substitution.

What are the specifications of 128308?

Key specifications for 128308: Cross-Sectional Shape Style: INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR; Flange Connecting Facility and Quantity: 4 THREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES; Flange Outside Width: 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM ALL FLANGES IN; Waveguide Outside Height: 0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN. 26 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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