The Plate,mounting, cataloged under National Stock Number 5340-01-408-4030, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-408-4030 |
| Primary Part Number | C99S12317-11 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Mounting Hole Quantity | 10 |
| Length | 28.0000 INCHES NOMINAL28.0000 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.3850 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM SECOND HOLE IN |
| Mounting Hole Diameter | 0.4170 INCHES MINIMUM AND 0.4284 INCHES MAXIMUM ALL HOLES IN |
| Mounting Hole Diameter | 0.5300 INCHES MINIMUM AND 0.5390 INCHES MAXIMUM FIRST HOLE IN |
| Shape | SPECIAL |
| Thread Size | 0.5000-13 |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Width | 15.6200 INCHES NOMINAL15.6200 INCHES NOMINAL IN |
| Material | STEEL |
| Thickness | 0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN |
| Mounting Hole Type | THREADED AND UNTHREADED |
| 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 |
|---|---|
| C99S12317-11 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| C99S12317-11 | 3/9 Design control — primary reference Northrop Grumman Systems Corporation |
NSN 5340-01-408-4030 is a Plate,mounting, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-408-4030 has 1 manufacturer part number on file: C99S12317-11 (Northrop Grumman Systems Corporation).
Key specifications for C99S12317-11: Mounting Hole Quantity: 10; Length: 28.0000 INCHES NOMINAL28.0000 INCHES NOMINAL IN; Mounting Hole Diameter: 0.3850 INCHES MINIMUM AND 0.3920 INCHES MAXIMUM SECOND HOLE IN; Mounting Hole Diameter: 0.4170 INCHES MINIMUM AND 0.4284 INCHES MAXIMUM ALL HOLES IN. 12 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.