The Waveguide Assembly, cataloged under National Stock Number 5985-00-005-1731, 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 Mega Industries Inc Mega Microwave Div. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-005-1731 |
| Primary Part Number | 49317 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Mega Industries Inc Mega Microwave Div |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.872 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Height | 1.006 INCHES NOMINAL SECOND FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.05 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.872 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.250 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.872 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 2.006 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND SINGLE FLANGE ALL CONNECTION FACILITIES |
| Waveguide Length | 6.000 INCHES NOMINAL IN |
| Nominal Thread Size | 0.190 INCHES SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 1.000 INCHES NOMINAL IN |
| Waveguide Outside Width | 2.000 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL SECOND FLANGE IN |
| Flange Depth | 0.938 INCHES NOMINAL FIRST FLANGE IN |
| Surface Treatment | ENAMEL SINGLE TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.872 INCHES NOMINAL IN |
| Thread Class | 2B SINGLE FLANGE ALL CONNECTION FACILITIES |
| Thread Quantity Per Inch | 32 SINGLE FLANGE ALL CONNECTION FACILITIES |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Material | RUBBER SYNTHETIC SINGLE TUBING JACKET |
| Flange Connecting Facility and Quantity | 8 UNTHREADED HOLE(S) FIRST FLANGE ALL CONNECTION FACILITIES |
| Flange Connecting Facility and Quantity | 5 THREADED HOLE(S) SECOND FLANGE ALL CONNECTION FACILITIES |
| Flange Outside Diameter | 3.625 INCHES NOMINAL FIRST FLANGE IN |
| Flange Outside Diameter | 3.625 INCHES NOMINAL SECOND FLANGE IN |
| Thread Series Designator | UNF SINGLE FLANGE ALL CONNECTION FACILITIES |
| 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 |
|---|---|
| 49317 | Mega Industries Inc Mega Microwave Div (USA) |
| Reference | Meaning |
|---|---|
| 49317 | 5/9 Secondary reference U.S. Government activity |
| 173184-1 | 3/2 Design control — primary reference U.S. Government activity |
| 8653734-1 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
NSN 5985-00-005-1731 is a Waveguide Assembly, manufactured by Mega Industries Inc Mega Microwave Div, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-005-1731 has 1 manufacturer part number on file: 49317 (Mega Industries Inc Mega Microwave Div).
2 possible matches (shared part number, not a government interchangeability claim): 4720-00-813-3886, 6680-01-203-5600. Verify interchangeability with system specifications before substitution.
Key specifications for 49317: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.872 INCHES NOMINAL FIRST FLANGE IN; Flange Inside Height: 1.006 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 5985-00-005-1731 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.