The Cover,access, cataloged under National Stock Number 5340-01-643-5680, 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 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-643-5680 |
| Primary Part Number | 12578412-1 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Distance From First Hole Centerline to End Along Width | 0.625 INCHES NOMINAL IN |
| Length | 18.838 INCHES NOMINAL IN |
| Usage Design | VEHICULAR |
| Distance Between Holes Along Width | 4.333 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Mounting Hole Diameter | UNABLE TO DECODE |
| Cross-Sectional Shape Style | FLAT |
| Hole Quantity Along Width | 8 |
| Distance From First Hole Centerline to End Along Length | 1.611 INCHES NOMINAL IN |
| Mounting Hole/slot Quantity | 8 |
| Peripheral Shape Style | RECTANGLE, MULTI HOLES |
| Width | 20.700 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY |
| Mounting Hole Type | UNABLE TO DECODE |
| Body Thickness | 0.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| 12578412-1 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 12578412 | D/9 Drawing number reference only U S Army Tank Automotive Command Amsta-Im-Mm |
NSN 5340-01-643-5680 is a Cover,access, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-643-5680 has 1 manufacturer part number on file: 12578412-1 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12578412-1: Distance From First Hole Centerline to End Along Width: 0.625 INCHES NOMINAL IN; Length: 18.838 INCHES NOMINAL IN; Usage Design: VEHICULAR; Distance Between Holes Along Width: 4.333 INCHES NOMINAL IN. 15 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.