The Waveguide Assembly, cataloged under National Stock Number 5985-01-374-8442, 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 28 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-374-8442 |
| Primary Part Number | 106441-11 |
| 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 |
| Flange Inside Height | 0.425 INCHES MINIMUM AND 0.431 INCHES MAXIMUM ALL FLANGES IN |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.35 |
| Style Designator | OFFSET BEND TYPE |
| Flexibility | FLEXIBLE OR RIGID ALL TUBING SEGMENT |
| Waveguide Inside Width | 0.691 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR DOUBLE RIDGED EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM ALL FLANGES IN |
| Waveguide Center to Center Distance | 8.090 INCHES NOMINAL IN |
| Flange Inside Width | 0.795 INCHES MINIMUM AND 0.801 INCHES MAXIMUM ALL FLANGES IN |
| Thread Direction | RIGHT-HAND ALL FLANGES ALL CONNECTION FACILITIES |
| Waveguide Length | 9.290 INCHES MINIMUM AND 9.660 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.138 INCHES ALL FLANGES ALL CONNECTION FACILITIES IN |
| Waveguide Outside Height | 0.421 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.791 INCHES NOMINAL IN |
| Flange Depth | 0.250 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM ALL FLANGES IN |
| Tubing Twist Type | STRAIGHT TWIST ALL TUBING SEGMENT |
| Tubing Twist Angle in Deg | 87.0 ALL TUBING SEGMENT |
| Insertion Loss in Decibels | 0.40 |
| Surface Treatment | CHROMATE ALL TUBING SEGMENT ALL SURFACES |
| Waveguide Inside Height | 0.321 INCHES NOMINAL IN |
| Thread Class | 2B ALL FLANGES ALL CONNECTION FACILITIES |
| Material | ALUMINUM ALLOY ALL TUBING SEGMENT |
| 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 |
|---|---|
| 106441-11 PRIMARY | Frontgrade Technologies Inc. (USA) |
| R10-1171 PRIMARY | Microwave Engineering Corporation (USA) |
| A55A9028-11 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| TDRS145091 | 5/9 Secondary reference Microwave Engineering Corporation |
NSN 5985-01-374-8442 is a Waveguide Assembly, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-374-8442 has 3 manufacturer part numbers on file: 106441-11 (Frontgrade Technologies Inc.), R10-1171 (Microwave Engineering Corporation), A55A9028-11 (Northrop Grumman Systems Corporation).
Key specifications for 106441-11: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Inside Height: 0.425 INCHES MINIMUM AND 0.431 INCHES MAXIMUM ALL FLANGES IN; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.35. 28 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 5985-01-374-8442 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.