The Nut,plain,round, cataloged under National Stock Number 5310-01-306-9931, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-306-9931 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 24 |
| Surface Treatment Document and Classification | QQ-P-416,TYPE 3,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UN |
| Hole Configuration Style | CONFIGURATION G |
| Material Document and Classification | ASTM A36 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.500 INCHES IN |
| Nut Diameter | 3.750 INCHES NOMINAL IN |
| Nut Thickness | 0.875 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND PHOSPHATE OVERALL |
| Nut Style | ROUND |
| Thread Class | 2B |
| Hole Nominal Thread Diameter | 0.312 INCHES IN |
| Thread Quantity Per Inch | 12 |
| Material | STEEL OR STEEL COMP 1026 OR STEEL COMP 1029 OR STEEL COMP 1030 OVERALL |
| Hole Type and Quantity | 1 TAPPED |
| 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 |
|---|---|
| 423909-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-306-9931 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-306-9931: Hole Thread Quantity Per Inch: 24; Surface Treatment Document and Classification: QQ-P-416,TYPE 3,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UN; Hole Configuration Style: CONFIGURATION G. 16 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.