The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-144-1644, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-144-1644 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 79.5 MILLIMETERS MINIMUM AND 79.5 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM80.0 MILLIMETERS MAXIMUM MM |
| Thread Tolerance Class | 4H5H INTERNAL4H5H INTERNAL |
| Thread Series | ISO MISO M |
| Thread Pitch in Millimeters | 4.004.00 |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Nominal Thread Size | 62.0 MILLIMETERS62.0 MILLIMETERS MM |
| Nut Height | 20.0 MILLIMETERS NOMINAL20.0 MILLIMETERS NOMINAL MM |
| Countersink Angle | 120.0 DEGREES NOMINAL BOTH ENDS120.0 DEGREES NOMINAL BOTH ENDS |
| Nut Style | HEXAGONHEXAGON |
| Bearing Surface Type | FLATFLAT |
| 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 |
|---|---|
| 526-5330330-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-144-1644 is a Nut,plain,hexagon, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-144-1644: Width Across Flats: 79.5 MILLIMETERS MINIMUM AND 79.5 MILLIMETERS MINIMUM AND 80.0 MILLIMETERS MAXIMUM80.0 MILLIMETERS MAXIMUM MM; Thread Tolerance Class: 4H5H INTERNAL4H5H INTERNAL; Thread Series: ISO MISO M; Thread Pitch in Millimeters: 4.004.00. 10 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.