The Plate,mounting, cataloged under National Stock Number 5340-01-398-7475, 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 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-398-7475 |
| Primary Part Number | 512-6404653-69 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 6 |
| Mounting Hole Diameter | 0.531 INCHES NOMINAL ALL HOLES IN |
| Shape | ROUND |
| Outside Diameter | 5.500 INCHES NOMINAL5.500 INCHES NOMINAL IN |
| Aperture Diameter | 1.280 INCHES NOMINAL IN |
| Features Provided | APERTURE |
| Material | NICKEL ALLOY |
| Thickness | 0.250 INCHES NOMINAL0.250 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 |
|---|---|
| 512-6404653-69 PRIMARY | Naval Sea Systems Command (USA) |
| 512-6404653-117 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 512-6404653 FIN | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5340-01-398-7475 is a Plate,mounting, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-398-7475 has 2 manufacturer part numbers on file: 512-6404653-69 (Naval Sea Systems Command), 512-6404653-117 (Naval Sea Systems Command).
Key specifications for 512-6404653-69: Mounting Hole Quantity: 6; Mounting Hole Diameter: 0.531 INCHES NOMINAL ALL HOLES IN; Shape: ROUND; Outside Diameter: 5.500 INCHES NOMINAL5.500 INCHES NOMINAL 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.
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.