The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-172-2561, 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15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-172-2561 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.875 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Criticality Code Justification | ZZZY |
| Hole Configuration Style | CONFIGURATION B |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.625 INCHES IN |
| Nut Height | 0.500 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.078 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 11 |
| Material | STEEL OVERALL |
| Bearing Surface Type | FLAT |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Hole Type and Quantity | 2 DRILLED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 820-4551525PC11 | 3/1 Design control — primary reference Naval Sea Systems Command |
| A-30896 | 5/9 Secondary reference Kieley and Mueller Inc Sub of Johnson Controls Inc |
| 820-4551557 | 5/1 Secondary reference Naval Sea Systems Command |
NSN 5310-01-172-2561 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-172-2561: Width Across Flats: 0.875 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Criticality Code Justification: ZZZY; Hole Configuration Style: CONFIGURATION B. 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.