The Cover,access, cataloged under National Stock Number 5340-01-021-5596, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5340-01-021-5596 |
| Primary Part Number | 160D611521-21 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Flange Thickness | 0.063 INCHES NOMINAL IN |
| Bolt Circle Hole Quantity | 9 |
| Inside Corner Radius | 3.000 INCHES NOMINAL IN |
| First Recess Inside Height | 0.750 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | QQ-A-250/13,O FED SPEC SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | SPHERICAL RECESS |
| Outside Diameter | 5.312 INCHES NOMINAL IN |
| Securing Device Type | THREADED FASTENER |
| Peripheral Shape Style | ROUND, MULTI HOLES |
| Material | ALUMINUM ALLOY 7075 |
| Hole Diameter | 0.190 INCHES MINIMUM AND 0.194 INCHES MAXIMUM IN |
| Body Thickness | 0.063 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 160D611521-21 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 160D611521-21 | 5/1 Secondary reference Northrop Grumman Systems Corporation |
| 160E611521-21 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 5340-01-021-5596 is a Cover,access, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-021-5596 has 1 manufacturer part number on file: 160D611521-21 (Northrop Grumman Systems Corporation).
Key specifications for 160D611521-21: Flange Thickness: 0.063 INCHES NOMINAL IN; Bolt Circle Hole Quantity: 9; Inside Corner Radius: 3.000 INCHES NOMINAL IN; First Recess Inside Height: 0.750 INCHES NOMINAL IN. 13 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 5340-01-021-5596 has DEMIL Code D. 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.