The Plate,mounting, cataloged under National Stock Number 5340-01-553-6993, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Appleton Marine Inc. 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 | 5340-01-553-6993 |
| Primary Part Number | MMD-1687 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Appleton Marine Inc |
| Status | ACTIVE |
| Mounting Hole Quantity | 2 |
| Length | 6.500 INCHES NOMINAL6.500 INCHES NOMINAL IN |
| Mounting Hole Diameter | 0.690 INCHES NOMINAL ALL HOLES IN |
| Width | 2.500 INCHES NOMINAL2.500 INCHES NOMINAL IN |
| Material | STEEL COMP 304 |
| Thickness | 0.250 INCHES NOMINAL0.250 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 |
|---|---|
| MMD-1687 PRIMARY | Appleton Marine Inc (USA) |
| AMD-1740 ITEM 42 | Appleton Marine Inc (USA) |
NSN 5340-01-553-6993 is a Plate,mounting, manufactured by Appleton Marine Inc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-553-6993 has 2 manufacturer part numbers on file: MMD-1687 (Appleton Marine Inc), AMD-1740 ITEM 42 (Appleton Marine Inc).
Key specifications for MMD-1687: Mounting Hole Quantity: 2; Length: 6.500 INCHES NOMINAL6.500 INCHES NOMINAL IN; Mounting Hole Diameter: 0.690 INCHES NOMINAL ALL HOLES IN; Special Features: SHAPE:RECTANGLE. 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.