The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-390-1868, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-390-1868 |
| Primary Part Number | 2881547 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| Thread Series | UN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.875 INCHES IN |
| Nut Diameter | 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN |
| Drive Point Depth | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nut Thickness | 0.210 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Small End Diameter | 2.386 INCHES MINIMUM AND 2.406 INCHES MAXIMUM IN |
| Surface Treatment | TIN OVERALL |
| Drive Point Quantity | 6 |
| Thread Class | 2B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 4340 OVERALL |
| 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 |
|---|---|
| 2881547 | Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company (USA) |
| 2881547 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 2881547 | 3/9 Design control — primary reference U.S. Government activity |
| 2881547 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-390-1868 is a Nut,self-Locking,round, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-390-1868 has 2 manufacturer part numbers on file: 2881547 (Derco Aerospace, Inc. Dba Derco Aerospace, Inc. a Lockheed Martin Company), 2881547 (Parker-Hannifin Corporation Dba Pneutronics).
Key specifications for 2881547: Thread Series: UN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.875 INCHES IN; Nut Diameter: 2.550 INCHES MINIMUM AND 2.570 INCHES MAXIMUM IN. 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.