The Plate,mounting, cataloged under National Stock Number 5340-01-505-0640, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-505-0640 |
| Primary Part Number | 563-7286781-17 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Aperture Type | COUNTERBORED |
| Raised Surface Height | 0.437 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.406 INCHES NOMINAL ALL HOLES IN |
| Shape | ROUND |
| Outside Diameter | 3.996 INCHES NOMINAL3.996 INCHES NOMINAL IN |
| Aperture Diameter | 0.500 INCHES NOMINAL IN |
| Counterbore Depth | 0.123 INCHES NOMINAL0.123 INCHES NOMINAL IN |
| Features Provided | RAISED SURFACE AND APERTURE |
| Counterbore Diameter | 0.880 INCHES MINIMUM AND 0.880 INCHES MINIMUM AND 0.883 INCHES MAXIMUM0.883 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY AND ALUMINUM ALLOY |
| Thickness | 0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN |
| Mounting Hole Type | UNTHREADED |
| Aperture Shape | ROUND |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 563-7286781-17 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| H684-1505-17 | 5/2 Secondary reference U.S. Government activity |
| 7286781 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5340-01-505-0640 is a Plate,mounting, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-505-0640 has 1 manufacturer part number on file: 563-7286781-17 (Naval Sea Systems Command).
Key specifications for 563-7286781-17: Mounting Hole Quantity: 4; Aperture Type: COUNTERBORED; Raised Surface Height: 0.437 INCHES NOMINAL IN; Mounting Hole Diameter: 0.406 INCHES NOMINAL ALL HOLES IN. 14 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.