The Cover,access, cataloged under National Stock Number 5340-00-451-6685, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-451-6685 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Status | ACTIVE |
| FSC Application Data | TRANSMISSION HYDRAULIC,VEHICULAR |
| Flange Thickness | 0.250 INCHES NOMINAL IN |
| Inside Corner Radius | 0.375 INCHES NOMINAL IN |
| First Recess Inside Height | 0.625 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | CIRCULAR RECESS |
| Securing Device Type | THREADED FASTENER |
| Inside Diameter | 4.000 INCHES NOMINAL IN |
| Body Outside Radius | 0.375 INCHES NOMINAL IN |
| Outside Corner Radius | 0.375 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 355.0 OR ALUMINUM ALLOY 356.0 |
| Inside Angle | 45.0 DEGREES NOMINAL |
| Hole Diameter | 0.421 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| 2584219 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-00-451-6685 is a Cover,access, classified under FSC 5340, Hardware, Commercial. Status: active.
Key specifications for 5340-00-451-6685: FSC Application Data: TRANSMISSION HYDRAULIC,VEHICULAR; Flange Thickness: 0.250 INCHES NOMINAL IN; Inside Corner Radius: 0.375 INCHES NOMINAL IN; First Recess Inside Height: 0.625 INCHES NOMINAL IN. 14 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.