PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1061591Waveguide Assembly

Frontgrade Technologies Inc. · NSN 5985-01-119-9402 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-119-9402 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-119-9402. Primary manufacturer part number: 1061591.
Features
  • Waveguide Assembly — FSC 5985
  • Material: ALUMINUM ALLOY THIRD TUBING SEGMENT
  • Flange Style: COVER TYPE SECOND FLANGE
  • Flange Connecting Facility and Quantity: 4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES
  • Surface Treatment: CHROMATE FOURTH TUBING SEGMENT ALL SURFACES
  • Flexibility: RIGID SECOND TUBING SEGMENT
  • Thread Direction: RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
  • Flange Quantity: 2
Applications
  • Applications requiring Aluminum Alloy Third Tubing Segment construction
General Description

The Waveguide Assembly, cataloged under National Stock Number 5985-01-119-9402, 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 Frontgrade Technologies Inc.. Government technical data includes 29 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5985-01-119-9402
Primary Part Number1061591
Item NameWaveguide Assembly
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerFrontgrade Technologies Inc.
StatusACTIVE
MaterialALUMINUM ALLOY THIRD TUBING SEGMENT
Flange StyleCOVER TYPE SECOND FLANGE
Flange Connecting Facility and Quantity4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES
Surface TreatmentCHROMATE FOURTH TUBING SEGMENT ALL SURFACES
FlexibilityRIGID SECOND TUBING SEGMENT
Thread DirectionRIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES
Flange Quantity2
Surface TreatmentSILVER FIFTH TUBING SEGMENT ALL SURFACES
FlexibilityFLEXIBLE FIFTH TUBING SEGMENT
Flange Inside Width0.896 INCHES MINIMUM AND 0.904 INCHES MAXIMUM FIRST FLANGE IN
Thread Class2B FIRST FLANGE ALL CONNECTION FACILITIES
Surface TreatmentCHROMATE AND NICKEL ALL FLANGE ALL SURFACES
MaterialCOPPER ALLOY FIFTH TUBING SEGMENT
Surface TreatmentCHROMATE THIRD TUBING SEGMENT ALL SURFACES
FlexibilityRIGID THIRD TUBING SEGMENT
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SECOND FLANGE IN
MaterialALUMINUM ALLOY SECOND TUBING SEGMENT
Flange Depth0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM FIRST FLANGE IN
Surface TreatmentCHROMATE SECOND TUBING SEGMENT ALL SURFACES
Flange Inside Width1.003 INCHES MINIMUM AND 1.006 INCHES MAXIMUM SECOND FLANGE IN
FlexibilityRIGID FOURTH TUBING SEGMENT
Flange Inside Height0.396 INCHES MINIMUM AND 0.404 INCHES MAXIMUM FIRST FLANGE IN
Flange Outside Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SECOND FLANGE IN
Voltage Standing Wave Ratio1.10
MaterialALUMINUM ALLOY FOURTH TUBING SEGMENT
Flange Outside Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM SECOND FLANGE IN
Flange Outside Width1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM FIRST FLANGE IN
Tubing Wall Construction StyleSEAMLESS ALL TUBING SEGMENT
Flange Outside Height1.610 INCHES MINIMUM AND 1.640 INCHES MAXIMUM FIRST FLANGE IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6640-00-551-9805 INTERCHANGEABLE
Tubing,glass
2530-00-977-25932-D-3580 INTERCHANGEABLE
Piston,hydraulic Brake
Caterpillar Inc Div Caterpillar Defense
4320-01-373-2743912-4020-75-12 INTERCHANGEABLE
Ring,wearing
Parker-Hannifin Corporation Div Integrated Sealing Systems Division
Cross-Reference Index
Part NumberManufacturer
TRS645111 Microwave Engineering Corporation (USA)
259449 Raytheon Company Dba Raytheon (USA)
1061591 PRIMARY Frontgrade Technologies Inc. (USA)
234200 PRIMARY Microtech Inc Dba Microtech Inc (USA)
Related Parts
6640-00-551-9805INTERCHANGEABLE
TUBING,GLASS
2530-00-977-2593INTERCHANGEABLE
PISTON,HYDRAULIC BRAKE
2-D-3580
4320-01-373-2743INTERCHANGEABLE
RING,WEARING
912-4020-75-12

Frequently Asked Questions

What is NSN 5985-01-119-9402?

NSN 5985-01-119-9402 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-119-9402?

NSN 5985-01-119-9402 has 4 cross-referenced part numbers: TRS645111 (Microwave Engineering Corporation), 259449 (Raytheon Company Dba Raytheon), 1061591 (Frontgrade Technologies Inc.), 234200 (Microtech Inc Dba Microtech Inc).

What NSN replaces 5985-01-119-9402?

There are 3 known substitutes for 5985-01-119-9402: 6640-00-551-9805, 2530-00-977-2593, 4320-01-373-2743. Verify interchangeability with system specifications before substitution.

What are the specifications of 1061591?

Key specifications for 1061591: Material: ALUMINUM ALLOY THIRD TUBING SEGMENT; Flange Style: COVER TYPE SECOND FLANGE; Flange Connecting Facility and Quantity: 4 UNTHREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES; Surface Treatment: CHROMATE FOURTH TUBING SEGMENT ALL SURFACES. 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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