The Waveguide Assembly, cataloged under National Stock Number 5985-01-395-0086, is classified within Federal Supply Class 5985 (Antennas, Waveguides, and Related Equipment) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-395-0086 |
| Primary Part Number | 1211430-201 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 1.335 INCHES MINIMUM AND 1.345 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.10 |
| Waveguide First Leg Length | 3.750 INCHES NOMINAL IN |
| Waveguide Second Leg Length | 31.150 INCHES NOMINAL IN |
| Style Designator | THREE BEND TYPE |
| Flexibility | RIGID THIRD TUBING SEGMENT |
| Flexibility | FLEXIBLE SECOND TUBING SEGMENT |
| Flexibility | RIGID FIRST TUBING SEGMENT |
| Waveguide Inside Width | 2.840 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.257 INCHES NOMINAL ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 2.835 INCHES MINIMUM AND 2.845 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Fourth Leg Length | 5.370 INCHES NOMINAL IN |
| Waveguide Outside Height | 1.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 3.000 INCHES NOMINAL IN |
| Flange Depth | 0.670 INCHES MINIMUM AND 0.710 INCHES MAXIMUM ALL FLANGES IN |
| Tubing Twist Type | TWISTABLE SECOND TUBING SEGMENT |
| Tubing Twist Angle in Deg | 20.0 SECOND TUBING SEGMENT |
| Insertion Loss in Decibels | 0.06 |
| Surface Treatment | CHROMATE AND PAINT ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | CHROMATE AND PAINT FIRST TUBING SEGMENT OUTSIDE SURFACES |
| Surface Treatment | CHROMATE AND PAINT THIRD TUBING SEGMENT OUTSIDE SURFACES |
| Waveguide Inside Height | 1.340 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY FIRST TUBING SEGMENT |
| Material | COPPER ALLOY SECOND TUBING SEGMENT |
| Material | ALUMINUM ALLOY THIRD TUBING SEGMENT |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 1211430-201 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| 1211430-201 | Microtech Inc Dba Microtech Inc (USA) |
| 1211430-201 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1211430-201 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5985-01-395-0086 is a Waveguide Assembly, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-395-0086 has 3 manufacturer part numbers on file: 1211430-201 (Lockheed Martin Corporation Div Rms), 1211430-201 (Microtech Inc Dba Microtech Inc), 1211430-201 (Microwave Engineering Corporation).
Key specifications for 1211430-201: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 1.335 INCHES MINIMUM AND 1.345 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.10. 29 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.