PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-1099Adapter,waveguide

Microwave Engineering Corporation · NSN 5985-00-432-3240 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-432-3240 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-432-3240. Primary manufacturer part number: 40-1099.
Features
  • Adapter,waveguide — FSC 5985
  • Flange Quantity: 1
  • Adapter Overall Height: 2.562 INCHES NOMINAL IN
  • Surface Treatment: CHROMATE AND PAINT SINGLE TUBING SEGMENT AND FLANGE ALL SURFACES
  • Voltage Standing Wave Ratio: 1.10
  • Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT
  • Adapter Length: 1.900 INCHES MAXIMUM IN
  • Adapter Diameter: 2.562 INCHES NOMINAL IN
Applications
  • Applications requiring Aluminum Alloy 6061 Single Tubing Segment and Flange construction
General Description

The Adapter,waveguide, cataloged under National Stock Number 5985-00-432-3240, 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 Microwave Engineering Corporation. Government technical data includes 14 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-432-3240
Primary Part Number40-1099
Item NameAdapter,waveguide
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMicrowave Engineering Corporation
StatusACTIVE
Flange Quantity1
Adapter Overall Height2.562 INCHES NOMINAL IN
Surface TreatmentCHROMATE AND PAINT SINGLE TUBING SEGMENT AND FLANGE ALL SURFACES
Voltage Standing Wave Ratio1.10
Tubing Wall Construction StyleSEAMLESS SINGLE TUBING SEGMENT
Adapter Length1.900 INCHES MAXIMUM IN
Adapter Diameter2.562 INCHES NOMINAL IN
Coaxial Connector Series DesignationN
MaterialALUMINUM ALLOY 6061 SINGLE TUBING SEGMENT AND FLANGE
Cross-Sectional Shape StyleINTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, ROUND
Connector End DesignFEMALE
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIPMENT
Style DesignatorWAVEGUIDE TO COAXIAL
Insertion Loss in Decibels0.10
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
3040-00-012-40352437507 INTERCHANGEABLE
Gearshaft,spur
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5305-00-013-211910-16487 INTERCHANGEABLE
Screw,machine
Precision Aerospace Corporation Dba Precision Engine Control
5930-00-548-8998E64127M INTERCHANGEABLE
Switch,push-Pull
Chrysler Realty Company Llc Dba Daimler Chrysler
5331-00-800-72564010-99 INTERCHANGEABLE
O-Ring
Circor Aerospace, Inc. Dba Circor Aerospace Inc
5998-01-029-3832401099 INTERCHANGEABLE
P.c. Board
Marine Electric Systems Inc
Cross-Reference Index
Part NumberManufacturer
40-1099 PRIMARY Microwave Engineering Corporation (USA)
404518-1 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
Related Parts
3040-00-012-4035INTERCHANGEABLE
GEARSHAFT,SPUR
2437507
5305-00-013-2119INTERCHANGEABLE
SCREW,MACHINE
10-16487
5930-00-548-8998INTERCHANGEABLE
SWITCH,PUSH-PULL
E64127M
5331-00-800-7256INTERCHANGEABLE
O-RING
4010-99
5998-01-029-3832INTERCHANGEABLE
P.C. BOARD
401099

Frequently Asked Questions

What is NSN 5985-00-432-3240?

NSN 5985-00-432-3240 is a Adapter,waveguide, manufactured by Microwave Engineering Corporation, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-432-3240?

NSN 5985-00-432-3240 has 2 cross-referenced part numbers: 40-1099 (Microwave Engineering Corporation), 404518-1 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products).

What NSN replaces 5985-00-432-3240?

There are 5 known substitutes for 5985-00-432-3240: 3040-00-012-4035, 5305-00-013-2119, 5930-00-548-8998 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-1099?

Key specifications for 40-1099: Flange Quantity: 1; Adapter Overall Height: 2.562 INCHES NOMINAL IN; Surface Treatment: CHROMATE AND PAINT SINGLE TUBING SEGMENT AND FLANGE ALL SURFACES; Voltage Standing Wave Ratio: 1.10. 14 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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