The Switch,waveguide, cataloged under National Stock Number 5985-00-182-6532, 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 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-00-182-6532 |
| Primary Part Number | 74532 |
| Item Name | Switch,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Waveguide Flange Type | CONTACT |
| Mounting Facility Type and Quantity | 4 THREADED HOLE(S) |
| Mounting Facility Pattern | FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY PATTERN |
| Longest Vertical Distance Between Mounting Centers | 1.400 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN IN |
| Coupling Position Quantity | 4 |
| Nominal Thread Size | 0.164 INCHES MOUNTING FACILITY HOLE IN |
| Actuator Operating Method | RELAY |
| Terminal Type and Quantity | 1 CONNECTOR, RECEPTACLE AND 3 RECTANGULAR FLANGE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) MOUNTING FACILITY HOLE |
| Longest Horizontal Distance Between Mounting Centers | 1.400 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN 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 |
|---|---|
| 74532 PRIMARY | Frontgrade Technologies Inc. (USA) |
| Reference | Meaning |
|---|---|
| 74532 | 5/9 Secondary reference U.S. Government activity |
| 74532 | 5/9 Secondary reference Atlantic Microwave Corporation Div Cobham Electronic Systems |
| ST4135050HE0001 | 5/9 Secondary reference U.S. Government activity |
NSN 5985-00-182-6532 is a Switch,waveguide, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-00-182-6532 has 1 manufacturer part number on file: 74532 (Frontgrade Technologies Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 5815-00-369-9923, 5120-00-570-7405. Verify interchangeability with system specifications before substitution.
Key specifications for 74532: Waveguide Flange Type: CONTACT; Mounting Facility Type and Quantity: 4 THREADED HOLE(S); Mounting Facility Pattern: FOUR POSITION RECTANGULAR SINGLE MOUNTING FACILITY PATTERN; Longest Vertical Distance Between Mounting Centers: 1.400 INCHES NOMINAL SINGLE MOUNTING FACILITY PATTERN IN. 10 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 5985-00-182-6532 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.