The Plate,mounting, cataloged under National Stock Number 5340-01-423-5026, 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 15 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-423-5026 |
| Primary Part Number | 561-6404325-40 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Aperture Type | COUNTERBORED |
| Length | 6.500 INCHES NOMINAL6.500 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.145 INCHES MINIMUM AND 0.156 INCHES MAXIMUM ALL HOLES IN |
| Shape | RECTANGULAR |
| Aperture Diameter | 0.375 INCHES NOMINAL IN |
| Counterbore Depth | 0.281 INCHES NOMINAL0.281 INCHES NOMINAL IN |
| Features Provided | APERTURE |
| Counterbore Diameter | 0.375 INCHES NOMINAL0.375 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Width | 0.937 INCHES NOMINAL0.937 INCHES NOMINAL IN |
| Material | COPPER |
| Thickness | 0.281 INCHES NOMINAL0.281 INCHES NOMINAL IN |
| Mounting Hole Type | THREADED |
| 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 |
|---|---|
| 561-6404325-40 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5340-01-423-5026 is a Plate,mounting, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-423-5026 has 1 manufacturer part number on file: 561-6404325-40 (Naval Sea Systems Command).
Key specifications for 561-6404325-40: Mounting Hole Quantity: 2; Aperture Type: COUNTERBORED; Length: 6.500 INCHES NOMINAL6.500 INCHES NOMINAL IN; Mounting Hole Diameter: 0.145 INCHES MINIMUM AND 0.156 INCHES MAXIMUM ALL HOLES IN. 15 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.