The Plug,machine Thread, cataloged under National Stock Number 5365-01-495-5345, is classified within Federal Supply Class 5365 (Bushings, Rings, Shims, and Spacers) of the Hardware and Abrasives group. The manufacturer of record is Dante Valve Company. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5365-01-495-5345 |
| Primary Part Number | MS51840-21CP |
| Item Name | Plug,machine Thread |
| FSC / FSG | 5365 / 53 — Bushings, Rings, Shims, and Spacers |
| Manufacturer | Dante Valve Company |
| Status | ACTIVE |
| Head Height | 0.323 INCHES NOMINAL IN |
| Connection Style | PLAIN |
| Thread Length | 0.245 INCHES NOMINAL EXTERNAL IN |
| Criticality Code Justification | ZZZY |
| Style Designator | PLUG, MACHINE |
| Material Document and Classification | ASTM B21 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND EXTERNAL |
| Nominal Thread Size | 0.313 INCHES EXTERNAL IN |
| Thread Class | 2A EXTERNAL A |
| Material | COPPER ALLOY OVERALL |
| Thread Series Designator | UNF EXTERNAL |
| Reference Number Differentiating Characteristics | CLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D |
| 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 |
|---|---|
| MS51840-21CP | Dante Valve Company (USA) |
| D1400-943 ITEM 21CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| D1400-943 | D/9 Drawing number reference only Danco Valve Company |
| D1400-943 ITEM 21 | 3/9 Design control — primary reference Danco Valve Company |
NSN 5365-01-495-5345 is a Plug,machine Thread, manufactured by Dante Valve Company, classified under FSC 5365, Bushings, Rings, Shims, and Spacers. Status: active.
NSN 5365-01-495-5345 has 2 manufacturer part numbers on file: MS51840-21CP (Dante Valve Company), D1400-943 ITEM 21CP (Naval Inventory Control Point Mechanicsburg).
Key specifications for MS51840-21CP: Head Height: 0.323 INCHES NOMINAL IN; Connection Style: PLAIN; Thread Length: 0.245 INCHES NOMINAL EXTERNAL IN; Criticality Code Justification: ZZZY. 12 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.