The Plate,mounting, cataloged under National Stock Number 5340-01-509-6845, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-509-6845 |
| Primary Part Number | 639509-3 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Length | 6.060 INCHES NOMINAL6.060 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.281 INCHES NOMINAL ALL HOLES IN |
| Shape | RECTANGULAR |
| Width | 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Thickness | 0.125 INCHES NOMINAL0.125 INCHES NOMINAL IN |
| 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 |
NSN 5340-01-509-6845 is a Plate,mounting, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-509-6845 has 2 manufacturer part numbers on file: 639509-3 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 639509-3 (Naval Sea Systems Command).
Key specifications for 639509-3: Mounting Hole Quantity: 2; Length: 6.060 INCHES NOMINAL6.060 INCHES NOMINAL IN; Mounting Hole Diameter: 0.281 INCHES NOMINAL ALL HOLES IN; Shape: RECTANGULAR. 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.