The Nut,plain,round, cataloged under National Stock Number 5310-01-286-9188, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-286-9188 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Hardness Rating | 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MINIMUM |
| Material Document and Classification | MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nut Counterbore Depth | 0.150 INCHES NOMINAL FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Nut Diameter | 0.380 INCHES NOMINAL IN |
| Counterbore Diameter | 0.180 INCHES NOMINAL FIRST END IN |
| Nut Thickness | 0.280 INCHES NOMINAL IN |
| Surface Treatment | ENAMEL OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL SECOND END |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4140 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2023992-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-286-9188 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-286-9188: Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MINIMUM; Material Document and Classification: MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Nut Counterbore Depth: 0.150 INCHES NOMINAL FIRST END IN. 15 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.