The Nut,plain,round, cataloged under National Stock Number 5310-01-025-0811, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 20 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-025-0811 |
| Primary Part Number | 123HM10020-511 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Hole Thread Quantity Per Inch | 32 |
| Surface Treatment Document and Classification | MIL-A-8625,TY 2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UN |
| Hole Configuration Style | CONFIGURATION J |
| Material Document and Classification | QQ-A-250/12 TEMPER T7351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 4.750 INCHES IN |
| Nut Diameter | 5.235 INCHES MINIMUM AND 5.265 INCHES MAXIMUM IN |
| Drive Point Depth | 0.156 INCHES NOMINAL IN |
| Nut Thickness | 0.328 INCHES MINIMUM AND 0.358 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE OVERALL |
| Countersink Angle | 120.0 DEGREES NOMINAL NUT |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Hole Nominal Thread Diameter | 0.138 INCHES IN |
| Thread Quantity Per Inch | 16 |
| Material | ALUMINUM ALLOY 7075 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 |
|---|---|
| 123HM10020-511 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 123HM10020-511 | 5/9 Secondary reference Northrop Grumman Systems Corporation |
| 123HM10020-511 | 5/9 Secondary reference Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport |
| 123HM10020-511 | 5/9 Secondary reference Tek Precision Co Limited |
NSN 5310-01-025-0811 is a Nut,plain,round, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-025-0811 has 1 manufacturer part number on file: 123HM10020-511 (Northrop Grumman Systems Corporation).
Key specifications for 123HM10020-511: Hole Thread Quantity Per Inch: 32; Surface Treatment Document and Classification: MIL-A-8625,TY 2,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UN; Hole Configuration Style: CONFIGURATION J. 20 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.