The Cap-Plug,protective,dust and Moi, cataloged under National Stock Number 5340-01-245-4252, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 5 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. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-245-4252 |
| Primary Part Number | 639AS1243 |
| Item Name | Cap-Plug,protective,dust and Moi |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Closed End Overall Diameter | 6.970 INCHES MINIMUM AND 7.000 INCHES MAXIMUM IN |
| Length Under Shoulder | 5.070 INCHES NOMINAL IN |
| Material Document and Classification | QQ-A-225/8, ALLOY 6061-T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/8, T651 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8, T6 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-200/8, T6510 FED SPEC 4TH MATERIAL RESPONSE OR QQ-A-200/8, T6511 FED SPEC 5TH MATERIAL RESPONSE |
| Open End Inside Diameter | 4.500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 6061 OR ALUMINUM ALLOY 6062 |
| 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 |
|---|---|
| 639AS1243 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5340-01-245-4252 is a Cap-Plug,protective,dust and Moi, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-245-4252 has 1 manufacturer part number on file: 639AS1243 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 639AS1243: Closed End Overall Diameter: 6.970 INCHES MINIMUM AND 7.000 INCHES MAXIMUM IN; Length Under Shoulder: 5.070 INCHES NOMINAL IN; Material Document and Classification: QQ-A-225/8, ALLOY 6061-T6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/8, T651 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-200/8, T6 FED SPEC 3RD MATERIAL RESPONSE OR QQ-A-200/8, T6510 FED SPEC 4TH MATERIAL RESPONSE OR QQ-A-200/8, T6511 FED SPEC 5TH MATERIAL RESPONSE; Special Features: 3 HOLES 0.1246 IN. MIN AND 0.1248 IN. MAX DIA EQUALLY SPACED ON 6.570 IN. DIA; 3 HOLES 0.278 IN. MIN AND 0.289 IN. MAX DIA EQUALLY SPACED ON 5.530 IN. DIA; 2 HOLES 0.159 IN. MIN AND 0.164 IN. MAX DIA CENTERED 0.531 IN. FROM CENTER LINE; 1 HOLE 0.1870 IN. MIN AND 0.1873 IN. MAX DIA LOCATED 1.362 FROM CENTER LINE; 1 HOLE 0.091 IN. MIN AND 0.098 IN. MAX DIA LOCATED 1.500 FROM CENTER; 4 PINS INCLUDED IN. 5 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.