The Plate,mounting, cataloged under National Stock Number 5340-01-590-3898, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-590-3898 |
| Primary Part Number | 12421519-018 |
| Item Name | Plate,mounting |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Mounting Hole Quantity | 21 |
| Length | 28.500 INCHES NOMINAL28.500 INCHES NOMINAL IN |
| Material Document and Classification | ASTM B209 ASSN STD SINGLE MATERIAL RESPONSE |
| Mounting Hole Diameter | 0.125 INCHES NOMINAL ALL HOLES IN |
| Shape | RECTANGULAR |
| Width | 26.810 INCHES NOMINAL26.810 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 5052 |
| Thickness | 0.063 INCHES NOMINAL0.063 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 |
|---|---|
| 12421519-018 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12421519 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5340-01-590-3898 is a Plate,mounting, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-590-3898 has 1 manufacturer part number on file: 12421519-018 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 5340-01-590-3900, 2590-01-710-7108, 2590-01-710-7128. Verify interchangeability with system specifications before substitution.
Key specifications for 12421519-018: Mounting Hole Quantity: 21; Length: 28.500 INCHES NOMINAL28.500 INCHES NOMINAL IN; Material Document and Classification: ASTM B209 ASSN STD SINGLE MATERIAL RESPONSE; Mounting Hole Diameter: 0.125 INCHES NOMINAL ALL HOLES IN. 9 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.