The Cover,access, cataloged under National Stock Number 5340-01-242-0851, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-242-0851 |
| Primary Part Number | 6-51877 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Bolt Circle Hole Quantity | 6 |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | QQ-A-200/3,T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/4,T4 FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | FLAT |
| Outside Diameter | 4.800 INCHES NOMINAL IN |
| Bolt Circle Diameter | 3.990 INCHES MINIMUM AND 4.010 INCHES MAXIMUM IN |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Material | ALUMINUM ALLOY 2024 |
| Hole Diameter | 0.281 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN |
| Body Thickness | 0.310 INCHES NOMINAL IN |
| 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 |
NSN 5340-01-242-0851 is a Cover,access, manufactured by The Boeing Company, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-242-0851 has 2 manufacturer part numbers on file: 6-51877 (Wynnson Enterprises, Inc.), 6-51877 (The Boeing Company).
Key specifications for 6-51877: Bolt Circle Hole Quantity: 6; Mounting Opening Shape Style: UNTHREADED HOLE; Material Document and Classification: QQ-A-200/3,T4 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/4,T4 FED SPEC SINGLE MATERIAL RESPONSE; Cross-Sectional Shape Style: FLAT. 10 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 5340-01-242-0851 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.