The Waveguide Assembly, cataloged under National Stock Number 5985-01-295-4530, 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 Microtech Inc Dba Microtech Inc. Government technical data includes 30 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-295-4530 |
| Primary Part Number | 300526 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microtech Inc Dba Microtech Inc |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SECOND TUBING SEGMENT |
| Tubing Wall Construction Style | SEAMLESS FIRST TUBING SEGMENT |
| Flange Inside Height | 0.139 INCHES MINIMUM AND 0.141 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Inside Height | 0.220 INCHES MINIMUM AND 0.224 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Voltage Standing Wave Ratio | 1.10 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 1.370 INCHES MINIMUM AND 1.380 INCHES MAXIMUM IN |
| Flexibility | FLEXIBLE FIRST TUBING SEGMENT |
| Flexibility | RIGID SECOND TUBING SEGMENT |
| Waveguide Inside Width | 0.280 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Outside Height | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.116 INCHES MINIMUM AND 0.118 INCHES MAXIMUM SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.279 INCHES MINIMUM AND 0.281 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Inside Width | 0.360 INCHES MINIMUM AND 0.364 INCHES MAXIMUM SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.112 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.250 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.360 INCHES NOMINAL IN |
| Flange Depth | 0.182 INCHES MINIMUM AND 0.192 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Depth | 0.195 INCHES MINIMUM AND 0.225 INCHES MAXIMUM FIRST FLANGE IN |
| Flange Outside Width | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM SECOND FLANGE IN |
| Flange Outside Width | 0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.20 |
| Surface Treatment | ENAMEL ALL TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Precious Material and Location | INTERNAL SURFACES SILVER |
| Waveguide Inside Height | 0.140 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 300526 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| 300526 | 3/9 Design control — primary reference Naval Command Control and Ocean Surveillance Center in Service Engineering Div West Coast |
| 300526 | C/1 Advisory reference — outside the item-of-supply concept Textron Systems Corporation Dba Textron Systems Corp |
| 300526 | 5/9 Secondary reference Mesa Microwave Inc. |
| 300526 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5985-01-295-4530 is a Waveguide Assembly, manufactured by Microtech Inc Dba Microtech Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-295-4530 has 1 manufacturer part number on file: 300526 (Microtech Inc Dba Microtech Inc).
Key specifications for 300526: Tubing Wall Construction Style: SEAMLESS SECOND TUBING SEGMENT; Tubing Wall Construction Style: SEAMLESS FIRST TUBING SEGMENT; Flange Inside Height: 0.139 INCHES MINIMUM AND 0.141 INCHES MAXIMUM FIRST FLANGE IN; Flange Inside Height: 0.220 INCHES MINIMUM AND 0.224 INCHES MAXIMUM SECOND FLANGE IN. 30 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.
NSN 5985-01-295-4530 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.