The Cover,access, cataloged under National Stock Number 5340-00-459-5970, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-459-5970 |
| Primary Part Number | 4L3378 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Width Across Flats | 6.562 INCHES NOMINAL IN |
| Corner Quantity | 6 |
| Corner Radius | 0.500 INCHES NOMINAL IN |
| Bolt Circle Hole Quantity | 6 |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Cross-Sectional Shape Style | FLAT |
| Securing Device Type | THREADED FASTENER |
| Bolt Circle Diameter | 6.625 INCHES NOMINAL IN |
| Peripheral Shape Style | REGULAR POLYGON, MULTI HOLES |
| Material | STEEL |
| Hole Diameter | 0.406 INCHES NOMINAL IN |
| Body Thickness | 0.375 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 |
|---|---|
| 4L3378 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 4123378 | 5/9 Secondary reference Striegel Supply, Inc. Dba Striegel Supply Inc |
NSN 5340-00-459-5970 is a Cover,access, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-459-5970 has 1 manufacturer part number on file: 4L3378 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4L3378: Width Across Flats: 6.562 INCHES NOMINAL IN; Corner Quantity: 6; Corner Radius: 0.500 INCHES NOMINAL IN; Bolt Circle Hole Quantity: 6. 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.