The Cover,access, cataloged under National Stock Number 5340-01-090-4581, 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 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-090-4581 |
| Primary Part Number | 12283751 |
| 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 | 0.188 INCHES NOMINAL IN |
| Length | 6.000 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625 TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE |
| Distance Between Hole Centerline and First Hole Along Length | 2.938 INCHES NOMINAL IN |
| Mounting Opening Shape Style | CLOSED VERTICAL SLOT |
| Material Document and Classification | QQ-A-250/11 FED SPEC SINGLE MATERIAL RESPONSE |
| Securing Device Type | SPECIAL |
| Surface Treatment | ANODIZE |
| Peripheral Shape Style | RECTANGLE, TWO HOLES |
| Width | 3.310 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 |
| Slot Width | 0.161 INCHES MINIMUM AND 0.171 INCHES MAXIMUM IN |
| Slot Length | 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 |
|---|---|
| 12283751 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| XM66021 | 5/9 Secondary reference General Dynamics Land Systems Inc. |
NSN 5340-01-090-4581 is a Cover,access, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-090-4581 has 1 manufacturer part number on file: 12283751 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12283751: Distance From First Hole Centerline to End Along Width: 0.188 INCHES NOMINAL IN; Length: 6.000 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625 TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE; Distance Between Hole Centerline and First Hole Along Length: 2.938 INCHES NOMINAL IN. 13 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.