The Cover,access, cataloged under National Stock Number 5340-01-418-5020, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-418-5020 |
| Primary Part Number | TE28258-1 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company |
| Status | ACTIVE |
| Length | 12.430 INCHES NOMINAL IN |
| Flange Thickness | 0.060 INCHES NOMINAL IN |
| Hole Quantity Along Length | 8 |
| Cross-Sectional Shape Style | CIRCULAR RECESS |
| Hole Quantity Along Width | 2 |
| Inside Diameter | 7.180 INCHES MINIMUM AND 7.190 INCHES MAXIMUM IN |
| Peripheral Shape Style | OVAL, MULTI HOLES |
| Width | 8.330 INCHES NOMINAL IN |
| Material | ALUMINUM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| TE28258-1 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| TE28258-1 | Precision Standard Inc (USA) |
| Reference | Meaning |
|---|---|
| TE28258-1 | 5/9 Secondary reference Mission Systems Davenport Inc. |
| TE28258-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5340-01-418-5020 is a Cover,access, manufactured by Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-418-5020 has 2 manufacturer part numbers on file: TE28258-1 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), TE28258-1 (Precision Standard Inc).
Key specifications for TE28258-1: Length: 12.430 INCHES NOMINAL IN; Flange Thickness: 0.060 INCHES NOMINAL IN; Hole Quantity Along Length: 8; Cross-Sectional Shape Style: CIRCULAR RECESS. 9 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.
NSN 5340-01-418-5020 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.