The Waveguide Assembly, cataloged under National Stock Number 5985-01-373-5042, 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 19 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-373-5042 |
| Primary Part Number | 106439-01 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Waveguide Height | 8.110 INCHES NOMINAL IN |
| Flange Quantity | 2 |
| Waveguide Leg Length | 7.870 INCHES NOMINAL IN |
| Style Designator | U-BEND TYPE |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR |
| Flange Connecting Hole Diameter | 0.125 INCHES NOMINAL SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Waveguide Center to Center Distance | 4.280 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES |
| Nominal Thread Size | 0.138 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN |
| Insertion Loss in Decibels | 0.25 |
| Waveguide Longer Leg Length | 10.400 INCHES NOMINAL IN |
| Thread Class | 2B ALL FLANGES ALL CONNECTION FACILITIES |
| Thread Quantity Per Inch | 32 ALL FLANGES ALL CONNECTION FACILITIES |
| Material | ALUMINUM ALLOY 6061 ALL FLANGE |
| Flange Connecting Facility and Quantity | 4 CAPTIVE SCREW(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) ALL FLANGES ALL CONNECTION FACILITIES |
| 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 |
|---|---|
| A55A9026-1 | Northrop Grumman Systems Corporation (USA) |
| 106439-01 PRIMARY | Frontgrade Technologies Inc. (USA) |
| R10-983 PRIMARY | Microwave Engineering Corporation (USA) |
NSN 5985-01-373-5042 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-373-5042 has 3 manufacturer part numbers on file: A55A9026-1 (Northrop Grumman Systems Corporation), 106439-01 (Frontgrade Technologies Inc.), R10-983 (Microwave Engineering Corporation).
Key specifications for 106439-01: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Waveguide Height: 8.110 INCHES NOMINAL IN; Flange Quantity: 2; Waveguide Leg Length: 7.870 INCHES NOMINAL IN. 19 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 5985-01-373-5042 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.