The Adapter,waveguide, cataloged under National Stock Number 5985-01-319-3057, 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 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 27 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-319-3057 |
| Primary Part Number | 1324AS305-4 |
| Item Name | Adapter,waveguide |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| FSC Application Data | MICROWAVE EQUIPMENT |
| Tubing Wall Construction Style | SEAMLESS SINGLE TUBING SEGMENT |
| Flange Inside Height | 0.628 INCHES MINIMUM SINGLE FLANGE IN |
| Flange Quantity | 1 |
| Voltage Standing Wave Ratio | 1.25 |
| Adapter Overall Width | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM IN |
| Style Designator | WAVEGUIDE TO COAXIAL |
| Waveguide Inside Width | 1.118 INCHES MINIMUM AND 1.126 INCHES MAXIMUM IN |
| Connector End Design | FEMALE |
| Cross-Sectional Shape Style | INTERNAL, RECTANGULAR EXTERNAL, RECTANGULAR |
| Flange Outside Height | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM SINGLE FLANGE IN |
| Adapter Overall Height | 2.700 INCHES MAXIMUM IN |
| Adapter Length | 1.650 INCHES MAXIMUM IN |
| Flange Connecting Hole Diameter | 0.169 INCHES MINIMUM SINGLE FLANGE ALL CONNECTION FACILITIES IN |
| Flange Inside Width | 1.253 INCHES MINIMUM SINGLE FLANGE IN |
| Waveguide Outside Height | 0.621 INCHES MINIMUM AND 0.629 INCHES MAXIMUM IN |
| Waveguide Outside Width | 1.246 INCHES MINIMUM AND 1.254 INCHES MAXIMUM IN |
| Flange Depth | 0.423 INCHES MINIMUM AND 0.453 INCHES MAXIMUM SINGLE FLANGE IN |
| Flange Outside Width | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM SINGLE FLANGE IN |
| Insertion Loss in Decibels | 0.30 |
| Surface Treatment | ENAMEL SINGLE TUBING SEGMENT AND FLANGE OUTSIDE SURFACES |
| Waveguide Inside Height | 0.493 INCHES MINIMUM AND 0.501 INCHES MAXIMUM IN |
| Adapter Height | 1.860 INCHES MINIMUM AND 1.890 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY SINGLE TUBING SEGMENT AND FLANGE |
| Flange Connecting Facility and Quantity | 4 UNTHREADED HOLE(S) SINGLE FLANGE ALL CONNECTION FACILITIES |
| Flange Style | COVER TYPE SINGLE FLANGE |
| Coaxial Connector Series Designation | N |
| 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 |
|---|---|
| 234106 | Microtech Inc Dba Microtech Inc (USA) |
| 1324AS305-4 | Keysight Technologies, Inc. (USA) |
| 1324AS305-4 | Cinch Connectivity Solutions Inc (USA) |
| 1324AS305-4 | Maury Microwave, Inc. Dba Maury Microwave (USA) |
| 1324AS305-4 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 1324AS305-4 | 5/9 Secondary reference Alford Mfg Co |
| 1324AS305-4 | 5/9 Secondary reference U.S. Government activity |
| 3000 6253 00 | 5/9 Secondary reference U.S. Government activity |
| 1324AS305-4 | 5/9 Secondary reference U.S. Government activity |
| 1324AS305-4 | 5/9 Secondary reference Microtech Inc Dba Microtech Inc |
NSN 5985-01-319-3057 is a Adapter,waveguide, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-319-3057 has 5 manufacturer part numbers on file: 234106 (Microtech Inc Dba Microtech Inc), 1324AS305-4 (Keysight Technologies, Inc.), 1324AS305-4 (Cinch Connectivity Solutions Inc), 1324AS305-4 (Maury Microwave, Inc. Dba Maury Microwave), 1324AS305-4 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1324AS305-4: FSC Application Data: MICROWAVE EQUIPMENT; Tubing Wall Construction Style: SEAMLESS SINGLE TUBING SEGMENT; Flange Inside Height: 0.628 INCHES MINIMUM SINGLE FLANGE IN; Flange Quantity: 1. 27 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 5985-01-319-3057 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.