The Waveguide Assembly, cataloged under National Stock Number 5985-00-184-8713, 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 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-184-8713 |
| Primary Part Number | 651620-1 |
| 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 | CORRUGATED ALL TUBING SEGMENT |
| Flange Inside Height | 1.340 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 1.340 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 2 |
| Precious Material | SILVER |
| Style Designator | STRAIGHT TYPE |
| Flexibility | FLEXIBLE SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 2.840 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.281 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 2.840 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Width | 2.840 INCHES NOMINAL FIRST FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Waveguide Length | 2.000 FEET NOMINAL FT |
| Nominal Thread Size | 0.250 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 1.660 INCHES NOMINAL IN |
| Waveguide Outside Width | 3.160 INCHES NOMINAL IN |
| Flange Depth | 0.750 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 1.250 INCHES NOMINAL FIRST FLANGE IN |
| Surface Treatment | SILVER ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | SILVER ALL TUBING SEGMENT INSIDE SURFACES |
| Surface Treatment | SILVER ALL TUBING SEGMENT OUTSIDE SURFACES |
| Precious Material and Location | TUBE SURFACE INSIDE AND OUTSIDE,FLANGE SURFACE SILVER |
| Waveguide Inside Height | 1.340 INCHES NOMINAL IN |
| Thread Class | 2B FIRST FLANGE ALL CONNECTION FACILITIES |
| Thread Quantity Per Inch | 20 FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 8 THREADED HOLE(S) FIRST FLANGE SINGLE CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) SECOND FLANGE SINGLE CONNECTION FACILITY |
| Flange Outside Diameter | 5.310 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Diameter | 5.310 INCHES NOMINAL SECOND FLANGE 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 |
|---|---|
| 651620-1 | Microtech Inc Dba Microtech Inc (USA) |
| 651620-1 | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| TL-86-4-A-24-N | 5/1 Secondary reference Microwave Engineering Corporation |
| 651620-1 | 3/2 Design control — primary reference U.S. Government activity |
| 220384 | 5/1 Secondary reference Microtech Inc Dba Microtech Inc |
NSN 5985-00-184-8713 is a Waveguide Assembly, manufactured by Microtech Inc Dba Microtech Inc, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-184-8713 has 2 manufacturer part numbers on file: 651620-1 (Microtech Inc Dba Microtech Inc), 651620-1 (Microwave Engineering Corporation).
1 possible match (shared part number, not a government interchangeability claim): 6240-01-458-4601. Verify interchangeability with system specifications before substitution.
Key specifications for 651620-1: Tubing Wall Construction Style: CORRUGATED ALL TUBING SEGMENT; Flange Inside Height: 1.340 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 1.340 INCHES NOMINAL SECOND FLANGE IN; Flange Quantity: 2. 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 5985-00-184-8713 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.