The Plate,mounting, cataloged under National Stock Number 5340-01-649-4986, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Sippican, Inc. Div Communication Division. Government technical data includes 10 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 | 5340-01-649-4986 |
| Primary Part Number | C135770-1 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Lockheed Martin Sippican, Inc. Div Communication Division |
| Status | ACTIVE |
| Mounting Hole Quantity | 4 |
| Length | 7.000 INCHES NOMINAL7.000 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.500 INCHES NOMINAL ALL HOLES IN |
| Shape | RECTANGULAR W/ROUNDED CORNERS |
| Aperture Corner Radius | 0.750 INCHES NOMINAL IN |
| Screw Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Width | 3.000 INCHES NOMINAL3.000 INCHES NOMINAL IN |
| Material | NICKEL ALLOY |
| Thickness | 1.125 INCHES NOMINAL1.125 INCHES NOMINAL IN |
| Mounting Hole Type | THREADED |
| 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 |
|---|---|
| C135770-1 PRIMARY | Lockheed Martin Sippican, Inc. Div Communication Division (USA) |
NSN 5340-01-649-4986 is a Plate,mounting, manufactured by Lockheed Martin Sippican, Inc. Div Communication Division, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-649-4986 has 1 manufacturer part number on file: C135770-1 (Lockheed Martin Sippican, Inc. Div Communication Division).
Key specifications for C135770-1: Mounting Hole Quantity: 4; Length: 7.000 INCHES NOMINAL7.000 INCHES NOMINAL IN; Mounting Hole Diameter: 0.500 INCHES NOMINAL ALL HOLES IN; Shape: RECTANGULAR W/ROUNDED CORNERS. 10 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.