The Plate,mounting, cataloged under National Stock Number 5340-01-374-2146, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rms. Government technical data includes 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-374-2146 |
| Primary Part Number | 1220D0489 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Corporation Div Rms |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Length | 8.500 INCHES NOMINAL8.500 INCHES NOMINAL IN |
| Raised Surface Height | 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN |
| Raised Surface Length | 6.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.404 INCHES MINIMUM AND 0.411 INCHES MAXIMUM ALL HOLES IN |
| Shape | RECTANGULAR |
| Features Provided | RAISED SURFACE |
| Material | NICKEL ALLOY |
| Thickness | 0.880 INCHES NOMINAL0.880 INCHES NOMINAL IN |
| Mounting Hole Type | 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 |
|---|---|
| 1220D0489 PRIMARY | Lockheed Martin Corporation Div Rms (USA) |
| Reference | Meaning |
|---|---|
| 1220D0489 | 5/9 Secondary reference Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems |
| 1220D0489 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5340-01-374-2146 is a Plate,mounting, manufactured by Lockheed Martin Corporation Div Rms, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-374-2146 has 1 manufacturer part number on file: 1220D0489 (Lockheed Martin Corporation Div Rms).
Key specifications for 1220D0489: Mounting Hole Quantity: 4; Length: 8.500 INCHES NOMINAL8.500 INCHES NOMINAL IN; Raised Surface Height: 0.385 INCHES MINIMUM AND 0.395 INCHES MAXIMUM IN; Raised Surface Length: 6.250 INCHES NOMINAL IN. 11 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.