The Cover,access, cataloged under National Stock Number 5340-01-056-1664, 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 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-056-1664 |
| Primary Part Number | 12266385 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Hole Quantity Along Length | 3 |
| Distance Between Hole Centers | 0.625 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | QQ-A-225/6,COND T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | FLAT |
| Outside Diameter | 1.760 INCHES NOMINAL IN |
| Bolt Hole Centerline to Nearest Edge Distance | 0.255 INCHES NOMINAL IN |
| Securing Device Type | THREADED FASTENER |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Material | ALUMINUM ALLOY 2024 |
| Hole Diameter | 0.179 INCHES MINIMUM AND 0.185 INCHES MAXIMUM IN |
| Body Thickness | 0.280 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 |
|---|---|
| 12266385 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 676990-3 | 5/9 Secondary reference Drs Sustainment Systems, Inc. |
| 12266385 | 3/2 Design control — primary reference U.S. Government activity |
| 12266385 | 3/9 Design control — primary reference Drs Sustainment Systems, Inc. |
NSN 5340-01-056-1664 is a Cover,access, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-056-1664 has 1 manufacturer part number on file: 12266385 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12266385: Hole Quantity Along Length: 3; Distance Between Hole Centers: 0.625 INCHES NOMINAL IN; Mounting Opening Shape Style: UNTHREADED HOLE; Material Document and Classification: QQ-A-225/6,COND T6 FED SPEC SINGLE MATERIAL RESPONSE. 12 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.