The Plug,leakproof Seal, cataloged under National Stock Number 5340-01-393-7703, is classified within Federal Supply Class 5340 (Hardware, Commercial) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 5340-01-393-7703 |
| Primary Part Number | MS18229-08NCL1 |
| Item Name | Plug,leakproof Seal |
| FSC / FSG | 5340 / 53 — Hardware, Commercial |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | S |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| MS18229-08NCL1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 6401267 ITEM 133L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 211052805L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| 595-6401267 ITEM 133L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| MS18229-08NC | 5/1 Secondary reference Naval Sea Systems Command |
| 211052805 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 6401267 ITEM 133 | 5/1 Secondary reference Naval Sea Systems Command |
| 595-6401267 ITEM 133 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5340-01-393-7703 is a Plug,leakproof Seal, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5340, Hardware, Commercial. Status: active.
NSN 5340-01-393-7703 has 4 manufacturer part numbers on file: MS18229-08NCL1 (Naval Inventory Control Point Mechanicsburg), 6401267 ITEM 133L1 (Naval Inventory Control Point Mechanicsburg), 211052805L1 (Naval Inventory Control Point Mechanicsburg), 595-6401267 ITEM 133L1 (Naval Inventory Control Point Mechanicsburg).
2 possible matches (shared part number, not a government interchangeability claim): 5365-01-446-5889, 5365-01-495-2417. Verify interchangeability with system specifications before substitution.
Key specifications for MS18229-08NCL1: Criticality Code Justification: ZZZY; End Item Identification: BARREL ASSEMBLY, INTERNAL AUXILIARY LAUNCHER; Reference Number Differentiating Characteristics: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS. 2 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.