The Nut,plain,round, cataloged under National Stock Number 5310-01-112-4380, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Euramco Safety Inc. Government technical data includes 13 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.
| Parameter | Value |
|---|---|
| NSN | 5310-01-112-4380 |
| Primary Part Number | 55-22020-24A |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Euramco Safety Inc |
| Status | ACTIVE |
| Thread Series | UNF |
| Hole Configuration Style | CONFIGURATION F |
| Material Document and Classification | QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | LEFT-HAND |
| Nominal Thread Size | 1.375 INCHES IN |
| Nut Diameter | 1.623 INCHES MINIMUM AND 1.625 INCHES MAXIMUM IN |
| Nut Thickness | 1.500 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.250 INCHES NOMINAL IN |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | COPPER ALLOY OVERALL |
| Hole Type and Quantity | 2 DRILLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 55-22020-24A PRIMARY | Euramco Safety Inc (USA) |
NSN 5310-01-112-4380 is a Nut,plain,round, manufactured by Euramco Safety Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-112-4380 has 1 manufacturer part number on file: 55-22020-24A (Euramco Safety Inc).
Key specifications for 55-22020-24A: Thread Series: UNF; Hole Configuration Style: CONFIGURATION F; Material Document and Classification: QQ-N-286 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: LEFT-HAND. 13 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.