The Waveguide Assembly, cataloged under National Stock Number 5985-00-086-9129, 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 Frontgrade Technologies 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government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 | 5985-00-086-9129 |
| Primary Part Number | 106287 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| FSC Application Data | ANTENNAS,WAVEGUIDES AND RELATED EQUIP. |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.510 INCHES NOMINAL SECOND FLANGE IN |
| Flange Inside Height | 0.510 INCHES NOMINAL FIRST FLANGE IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.20 |
| Bend Angle in Deg | 30.0 SINGLE BEND E-PLANE |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 0.360 INCHES NOMINAL IN |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 1.017 INCHES MINIMUM AND 1.023 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 10.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Flange Outside Height | 1.688 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Height | 1.688 INCHES NOMINAL FIRST FLANGE IN |
| Flange Connecting Hole Diameter | 0.180 INCHES NOMINAL SECOND FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.020 INCHES NOMINAL FIRST FLANGE IN |
| Flange Inside Width | 1.020 INCHES NOMINAL SECOND FLANGE IN |
| Thread Direction | RIGHT-HAND FIRST FLANGE ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.164 INCHES FIRST FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.633 INCHES MINIMUM AND 0.643 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.143 INCHES MINIMUM AND 1.153 INCHES MAXIMUM IN |
| Flange Outside Width | 1.688 INCHES NOMINAL SECOND FLANGE IN |
| Flange Outside Width | 1.688 INCHES NOMINAL FIRST FLANGE IN |
| Insertion Loss in Decibels | 0.10 |
| Surface Treatment | ENAMEL ALL FLANGE OUTSIDE SURFACES |
| Surface Treatment | ENAMEL SINGLE TUBING SEGMENT OUTSIDE SURFACES |
| Waveguide Inside Height | 0.507 INCHES MINIMUM AND 0.513 INCHES MAXIMUM IN |
| Thread Class | 2B FIRST FLANGE ALL CONNECTION FACILITIES |
| Thread Quantity Per Inch | 32 FIRST 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 |
|---|---|
| 106287 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2170859-1 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
| 106287 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-086-9129 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-086-9129 has 1 manufacturer part number on file: 106287 (Frontgrade Technologies Inc.).
5 possible matches (shared part number, not a government interchangeability claim): 5998-00-682-4952, 5325-00-981-5139, 4820-01-210-2675. Verify interchangeability with system specifications before substitution.
Key specifications for 106287: FSC Application Data: ANTENNAS,WAVEGUIDES AND RELATED EQUIP.; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.510 INCHES NOMINAL SECOND FLANGE IN; Flange Inside Height: 0.510 INCHES NOMINAL FIRST 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 5985-00-086-9129 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.