The Plate,mounting, cataloged under National Stock Number 5340-01-355-4959, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-355-4959 |
| Primary Part Number | 803-5959302-A-23 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Aperture Type | COUNTERBORED |
| Length | 5.000 INCHES NOMINAL5.000 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.810 INCHES NOMINAL ALL HOLES IN |
| Shape | SQUARE |
| Aperture Diameter | 2.020 INCHES MINIMUM AND 2.025 INCHES MAXIMUM IN |
| Counterbore Depth | 0.644 INCHES NOMINAL0.644 INCHES NOMINAL IN |
| Features Provided | APERTURE |
| Counterbore Diameter | 3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN |
| Width | 5.000 INCHES NOMINAL5.000 INCHES NOMINAL IN |
| Material | TITANIUM ALLOY |
| Thickness | 1.310 INCHES NOMINAL1.310 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 |
|---|---|
| 803-5959302-A-23 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-355-4959 is a Plate,mounting, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-355-4959 has 1 manufacturer part number on file: 803-5959302-A-23 (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-678-2921. Verify interchangeability with system specifications before substitution.
Key specifications for 803-5959302-A-23: Mounting Hole Quantity: 4; Aperture Type: COUNTERBORED; Length: 5.000 INCHES NOMINAL5.000 INCHES NOMINAL IN; Mounting Hole Diameter: 0.810 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.