The Cap,protective,dust and Moisture, cataloged under National Stock Number 5340-01-386-8188, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5340-01-386-8188 |
| Primary Part Number | 801-66441188FNA8 |
| Item Name | Cap,protective,dust and Moisture |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Design Type | THREADED |
| Material Document and Classification | QQ-A-250/11, ALLOY 6061, T651 FED SPEC SINGLE MATERIAL RESPONSE |
| Opening Inside Diameter for Which Designed | 9.242 INCHES MINIMUM AND 9.246 INCHES MAXIMUM IN |
| Thread Class | 2B |
| Material | ALUMINUM ALLOY 6061 |
| Thread Size and Series/type Designator | 0.438-20 UNF |
| 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 |
|---|---|
| 2643-930-51-A8 | Naval Sea Systems Command (USA) |
| 801-66441188FNA8 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 801-6641188FNA8 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5340-01-386-8188 is a Cap,protective,dust and Moisture, manufactured by Naval Sea Systems Command, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-386-8188 has 2 manufacturer part numbers on file: 2643-930-51-A8 (Naval Sea Systems Command), 801-66441188FNA8 (Naval Sea Systems Command).
Key specifications for 801-66441188FNA8: Design Type: THREADED; Material Document and Classification: QQ-A-250/11, ALLOY 6061, T651 FED SPEC SINGLE MATERIAL RESPONSE; Opening Inside Diameter for Which Designed: 9.242 INCHES MINIMUM AND 9.246 INCHES MAXIMUM IN; Thread Class: 2B. 6 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.