The Waveguide Assembly, cataloged under National Stock Number 5985-01-396-2012, 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 20 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5985-01-396-2012 |
| Primary Part Number | P170S-18-1B-1B-N |
| Item Name | Waveguide Assembly |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.311 INCHES NOMINAL ALL FLANGES IN |
| Flange Quantity | 2 |
| Style Designator | STRAIGHT TYPE |
| Flexibility | RIGID SINGLE TUBING SEGMENT |
| Waveguide Inside Width | 0.622 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.312 INCHES NOMINAL ALL FLANGES IN |
| Flange Connecting Hole Diameter | 0.144 INCHES MINIMUM AND 0.147 INCHES MAXIMUM ALL FLANGES ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 0.622 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Length | 18.000 INCHES NOMINAL IN |
| Specification/standard Data | 81755-654VE190 MANUFACTURERS SPECIFICATION CONTROL |
| Waveguide Outside Height | 0.391 INCHES NOMINAL IN |
| Waveguide Outside Width | 0.702 INCHES NOMINAL IN |
| Flange Depth | 0.375 INCHES NOMINAL ALL FLANGES IN |
| Flange Outside Width | 1.312 INCHES NOMINAL ALL FLANGES IN |
| Waveguide Inside Height | 0.311 INCHES NOMINAL IN |
| Material | METAL SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) ALL FLANGES ALL CONNECTION FACILITIES |
| Flange Style | COVER 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 |
|---|---|
| P170S-18-1B-1B-N PRIMARY | Microwave Engineering Corporation (USA) |
| 654VE7190-664 | Microtech Inc Dba Microtech Inc (USA) |
| Reference | Meaning |
|---|---|
| TS-57-4-B-18-N | 5/9 Secondary reference Microwave Engineering Corporation |
| 654VE7190-664 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5985-01-396-2012 is a Waveguide Assembly, manufactured by Microwave Engineering Corporation, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-396-2012 has 2 manufacturer part numbers on file: P170S-18-1B-1B-N (Microwave Engineering Corporation), 654VE7190-664 (Microtech Inc Dba Microtech Inc).
Key specifications for P170S-18-1B-1B-N: Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.311 INCHES NOMINAL ALL FLANGES IN; Flange Quantity: 2; Style Designator: STRAIGHT TYPE. 20 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 5985-01-396-2012 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.