The Waveguide Assembly, cataloged under National Stock Number 5985-01-415-6250, 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 Microwave Engineering Corporation. Government technical data includes 29 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-415-6250 |
| Primary Part Number | TDRS105008 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Inside Height | 0.321 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Style Designator | OFFSET BEND TYPE |
| Flexibility | FLEXIBLE SECOND TUBING SEGMENT |
| Flexibility | RIGID FIRST TUBING SEGMENT |
| Waveguide Inside Width | 0.720 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.375 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.0933 INCHES MINIMUM AND 0.0935 INCHES MAXIMUM ALL FLANGES FIRST CONNECTION FACILITY IN |
| Flange Connecting Hole Diameter | 0.960 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM ALL FLANGES SECOND CONNECTION FACILITY IN |
| Waveguide Center to Center Distance | 3.210 INCHES NOMINAL IN |
| Flange Inside Width | 0.720 INCHES NOMINAL ALL FLANGES IN |
| Thread Direction | RIGHT-HAND ALL FLANGES THIRD CONNECTION FACILITY |
| Waveguide Length | 27.100 INCHES NOMINAL IN |
| Nominal Thread Size | 0.138 INCHES ALL FLANGES THIRD CONNECTION FACILITY IN |
| Specification/standard Data | 43999-LE413-0409 MANUFACTURERS SPECIFICATION CONTROL |
| Waveguide Outside Height | 0.421 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.820 INCHES NOMINAL IN |
| Flange Depth | 0.245 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.375 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Height | 0.321 INCHES NOMINAL IN |
| Thread Class | 2A ALL FLANGES THIRD CONNECTION FACILITY A |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 2 UNTHREADED HOLE(S) ALL FLANGES SECOND CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 2 UNTHREADED HOLE(S) ALL FLANGES FIRST CONNECTION FACILITY |
| Flange Connecting Facility and Quantity | 4 THREADED STUD(S) ALL FLANGES THIRD CONNECTION FACILITY |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL FLANGES THIRD CONNECTION FACILITY |
| Flange Style | CONTACT, DOUBLE RIDGE TYPE ALL FLANGES |
| 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 |
|---|---|
| LE413-0409-0207 | Frontgrade Technologies Inc. (USA) |
| TDRS105008 PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| LE413-0409-0207 | 5/9 Secondary reference U.S. Government activity |
| LE413-0409-0207 | 7/2 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
NSN 5985-01-415-6250 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-415-6250 has 2 manufacturer part numbers on file: LE413-0409-0207 (Frontgrade Technologies Inc.), TDRS105008 (Microwave Engineering Corporation).
Key specifications for TDRS105008: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.321 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2; Style Designator: OFFSET BEND TYPE. 29 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 5985-01-415-6250 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.