The Plug,machine Thread, cataloged under National Stock Number 5365-01-255-3510, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Naval Inventory Control Point Mechanicsburg. Government technical data includes 11 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-255-3510 |
| Primary Part Number | MS18229,QQ-N-281,CL A,3/8L1 |
| Item Name | Plug,machine Thread |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Naval Inventory Control Point Mechanicsburg |
| Status | ACTIVE |
| Head Height | 0.297 INCHES NOMINAL IN |
| Connection Style | EXTERNAL SEAT FOR GASKET SEAL |
| Criticality Code Justification | ZZZY |
| Style Designator | PLUG, MACHINE |
| Material Document and Classification | MIL-C-15726,COMP 70/30 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 0.562 INCHES EXTERNAL IN |
| Thread Quantity Per Inch | 18 EXTERNAL |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UN EXTERNAL |
| 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 | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| MS18229,QQ-N-281,CL A,3/8L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| MS18229-06NCL,L1 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 400 6537775 REV-ITEM 29L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 400 6537775 REV-ITEM 29 | 3/1 Design control — primary reference Naval Sea Systems Command |
| 6537775-29L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| MS18229-06NCL | 4/1 Identification reference U.S. Government activity |
| 6537775-29 | 5/1 Secondary reference Naval Sea Systems Command |
| 400 6640205 REV-ITEM 20L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 400 6640205 REV-ITEM 20 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5365-01-255-3510 is a Plug,machine Thread, manufactured by Naval Inventory Control Point Mechanicsburg, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-255-3510 has 2 manufacturer part numbers on file: MS18229,QQ-N-281,CL A,3/8L1 (Naval Inventory Control Point Mechanicsburg), MS18229-06NCL,L1 (Naval Inventory Control Point Mechanicsburg).
Key specifications for MS18229,QQ-N-281,CL A,3/8L1: Head Height: 0.297 INCHES NOMINAL IN; Connection Style: EXTERNAL SEAT FOR GASKET SEAL; Criticality Code Justification: ZZZY; Style Designator: PLUG, MACHINE. 11 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.