The Waveguide Assembly, cataloged under National Stock Number 5985-01-291-2876, 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 27 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-291-2876 |
| Primary Part Number | 232771 |
| 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 SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Style Designator | BEND TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.122 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.166 INCHES NOMINAL AND 0.172 INCHES MAXIMUM FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM ALL FLANGES IN |
| Thread Direction | RIGHT-HAND SECOND FLANGE ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.164 INCHES SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.625 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.250 INCHES NOMINAL IN |
| Flange Depth | 0.610 INCHES MINIMUM AND 0.640 INCHES MAXIMUM ALL FLANGES IN |
| Flange Outside Width | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM ALL FLANGES IN |
| Precious Material and Location | INTERNAL AND EXTERNAL SURFACES SILVER |
| Waveguide Inside Height | 0.497 INCHES NOMINAL IN |
| Thread Class | 2B SECOND FLANGE ALL CONNECTION FACILITIES |
| Material | SILVER SINGLE TUBING SEGMENT |
| Material | ALUMINUM ALLOY ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 THREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SECOND FLANGE ALL CONNECTION FACILITIES |
| Flange Style | CHOKE TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 61.010 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 |
|---|---|
| 232771 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| 654E7220-803 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5985-01-291-2876 is a Waveguide Assembly, manufactured by Microtech Inc Dba Microtech Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-291-2876 has 1 manufacturer part number on file: 232771 (Microtech Inc Dba Microtech Inc).
Key specifications for 232771: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2; Precious Material: SILVER. 27 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 5985-01-291-2876 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.