The Cover,waveguide Flange, cataloged under National Stock Number 5985-01-396-2543, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5985-01-396-2543 |
| Primary Part Number | RPW90-1A-1A-A |
| Item Name | Cover,waveguide Flange |
| FSC / FSG | 5985 / 59 — Antennas, Waveguides, and Related Equipment |
| Manufacturer | Frontgrade Technologies Inc. |
| Status | ACTIVE |
| Mounting Method | EYELET(S) |
| Body Width | 1.625 INCHES NOMINAL IN |
| Body Height | 0.380 INCHES NOMINAL IN |
| Specification/standard Data | 66948-2001136 MANUFACTURERS SPECIFICATION CONTROL |
| Body Length | 1.625 INCHES NOMINAL IN |
| Surface Treatment | ENAMEL |
| Material | ALUMINUM ALLOY AND GLASS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| RPW90-1A-1A-A PRIMARY | Frontgrade Technologies Inc. (USA) |
| 90WT56-2C-10P PRIMARY | Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc (USA) |
| Reference | Meaning |
|---|---|
| 2001136-001 | 7/2 Vendor item drawing reference L3harris Technologies, Inc. Dba Harris Div L3harris Technologies Inc Dba Harris Corporation |
NSN 5985-01-396-2543 is a Cover,waveguide Flange, manufactured by Frontgrade Technologies Inc., classified under FSC 5985, Antennas, Waveguides, and Related Equipment. Status: active.
NSN 5985-01-396-2543 has 2 manufacturer part numbers on file: RPW90-1A-1A-A (Frontgrade Technologies Inc.), 90WT56-2C-10P (Microwave Development Laboratories, Inc. Dba Microwave Development Laboratories Inc).
Key specifications for RPW90-1A-1A-A: Mounting Method: EYELET(S); Body Width: 1.625 INCHES NOMINAL IN; Body Height: 0.380 INCHES NOMINAL IN; Specification/standard Data: 66948-2001136 MANUFACTURERS SPECIFICATION CONTROL. 7 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.
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.