The Cover,access, cataloged under National Stock Number 5340-00-578-4100, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Unison Industries Llc. Government technical data includes 19 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-00-578-4100 |
| Primary Part Number | 10-381028 |
| Item Name | Cover,access |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| FSC Application Data | EXCITER IGNITION,ENGINE ELECTRICAL SYSTEM,AIRCRAFT |
| Inside Width | 3.727 INCHES NOMINAL IN |
| Corner Radius | 0.130 INCHES NOMINAL IN |
| Length | 5.537 INCHES MINIMUM AND 5.547 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PLATE-9-3435 MFR REF SINGLE TREATMENT RESPONSE |
| Inside Length | 0.220 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Flange Thickness | 0.040 INCHES NOMINAL IN |
| Inside Corner Radius | 0.090 INCHES NOMINAL IN |
| First Recess Inside Height | 0.240 INCHES NOMINAL IN |
| Mounting Opening Shape Style | UNTHREADED HOLE |
| Material Document and Classification | AMS 4025 ASSN STD SINGLE MATERIAL RESPONSE |
| Cross-Sectional Shape Style | SQUARE OR RECTANGULAR RECESS |
| Securing Device Type | THREADED FASTENER |
| Surface Treatment | NICKEL |
| Peripheral Shape Style | RECTANGLE, NO HOLES |
| Width | 3.802 INCHES MINIMUM AND 3.812 INCHES MAXIMUM IN |
| Material | NICKEL |
| Hole Diameter | 0.065 INCHES MINIMUM AND 0.071 INCHES MAXIMUM IN |
| Body Thickness | 0.040 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| 10-381028 PRIMARY | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 10-381028 | 5/9 Secondary reference Amphenol Corp Div Amphenol Aerospace Operations |
NSN 5340-00-578-4100 is a Cover,access, manufactured by Unison Industries Llc, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-00-578-4100 has 1 manufacturer part number on file: 10-381028 (Unison Industries Llc).
Key specifications for 10-381028: FSC Application Data: EXCITER IGNITION,ENGINE ELECTRICAL SYSTEM,AIRCRAFT; Inside Width: 3.727 INCHES NOMINAL IN; Corner Radius: 0.130 INCHES NOMINAL IN; Length: 5.537 INCHES MINIMUM AND 5.547 INCHES MAXIMUM IN. 19 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 5340-00-578-4100 has DEMIL Code Q. 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.