The Nut,plain,round, cataloged under National Stock Number 5310-00-391-8014, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Siemens Energy, Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-391-8014 |
| Primary Part Number | H404A |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Siemens Energy, Inc. |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 20 |
| Thread Series | UNEF |
| Hole Configuration Style | CONFIGURATION J |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.375 INCHES IN |
| Nut Diameter | 2.750 INCHES NOMINAL IN |
| Drive Point Depth | 0.312 INCHES NOMINAL IN |
| Nut Thickness | 1.125 INCHES NOMINAL IN |
| Drive Point Diameter | 0.281 INCHES NOMINAL IN |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Hole Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Quantity Per Inch | 18 |
| Material | COPPER ALLOY 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 |
| Part Number | Manufacturer |
|---|---|
| H404A | Siemens Energy, Inc. (USA) |
| Reference | Meaning |
|---|---|
| G10091PC32-35 | 5/9 Secondary reference Siemens Energy, Inc. |
| H404A | 5/9 Secondary reference U.S. Government activity |
| G8737PC32 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10006PC15 | 5/9 Secondary reference Siemens Energy, Inc. |
| G8113PC32 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10089PC32-35 | 5/9 Secondary reference Siemens Energy, Inc. |
| G8735PC32 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10091PC32 | 5/9 Secondary reference Siemens Energy, Inc. |
| G8115PC32 | 5/9 Secondary reference Siemens Energy, Inc. |
| G10089PC32-35 | 3/2 Design control — primary reference U.S. Government activity |
| G10091PC32-35 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-391-8014 is a Nut,plain,round, manufactured by Siemens Energy, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-391-8014 has 1 manufacturer part number on file: H404A (Siemens Energy, Inc.).
Key specifications for H404A: Hole Thread Quantity Per Inch: 20; Thread Series: UNEF; Hole Configuration Style: CONFIGURATION J; Thread Direction: RIGHT-HAND. 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.