The Waveguide Assembly, cataloged under National Stock Number 5985-01-443-0263, 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 Space Machine & Engineering Corp. Dba Space Machine & Engineering Corp. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5985-01-443-0263 |
| Primary Part Number | C99A9166-1 |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Space Machine & Engineering Corp. Dba Space Machine & Engineering Corp |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS ALL TUBING SEGMENT |
| Flange Quantity | 2 |
| Voltage Standing Wave Ratio | 1.10 |
| Style Designator | BEND TYPE |
| Waveguide Offset Distance | 7.360 INCHES NOMINAL IN |
| Flexibility | RIGID ALL TUBING SEGMENT |
| Waveguide Inside Width | 0.900 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Operating Pressure | 30.0 POUNDS PER SQUARE INCH GAUGE (PSIG) MAXIMUM LBS |
| Specified Frequency | 8.2 GIGAHERTZ MINIMUM AND 12.3 GIGAHERTZ MAXIMUM |
| Waveguide Outside Height | 0.500 INCHES NOMINAL IN |
| Waveguide Outside Width | 1.000 INCHES NOMINAL IN |
| Tubing Twist Type | STRAIGHT TWIST ALL TUBING SEGMENT |
| Insertion Loss in Decibels | 0.17 |
| Waveguide Inside Height | 0.400 INCHES NOMINAL IN |
| Material | COPPER ALLOY SINGLE TUBING SEGMENT |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | COVER TYPE ALL FLANGES |
| Waveguide Longer Offset Distance | 14.550 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| C99A9166-1 PRIMARY | Space Machine & Engineering Corp. Dba Space Machine & Engineering Corp (USA) |
| 1062317 PRIMARY | Frontgrade Technologies Inc. (USA) |
| C99A9166-1 | Northrop Grumman Systems Corporation (USA) |
| X10-1868 PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| C99A9166 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
NSN 5985-01-443-0263 is a Waveguide Assembly, manufactured by Space Machine & Engineering Corp. Dba Space Machine & Engineering Corp, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-443-0263 has 4 manufacturer part numbers on file: C99A9166-1 (Space Machine & Engineering Corp. Dba Space Machine & Engineering Corp), 1062317 (Frontgrade Technologies Inc.), C99A9166-1 (Northrop Grumman Systems Corporation), X10-1868 (Microwave Engineering Corporation).
Key specifications for C99A9166-1: Tubing Wall Construction Style: SEAMLESS ALL TUBING SEGMENT; Flange Quantity: 2; Voltage Standing Wave Ratio: 1.10; Style Designator: BEND TYPE. 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 5985-01-443-0263 has DEMIL Code B. 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.