The Nut,plain,round, cataloged under National Stock Number 5310-00-935-3019, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-935-3019 |
| Primary Part Number | 570281 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc |
| Status | ACTIVE |
| Thread Series | UNEF |
| Thread Pitch Diameters | +0.4173 TO 0.4208 INCHES IN |
| Drive Point Width | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Diameter | 1.080 INCHES MINIMUM AND 1.100 INCHES MAXIMUM IN |
| Drive Point Depth | 0.070 INCHES NOMINAL IN |
| Nut Thickness | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Drive Point Quantity | 8 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| 570281 PRIMARY | Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc (USA) |
| 570281 | Unison Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| 570281 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 570281 | 5/9 Secondary reference U.S. Government activity |
| 570281 | 5/9 Secondary reference Royal Oak Gage, Inc |
NSN 5310-00-935-3019 is a Nut,plain,round, manufactured by Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-935-3019 has 2 manufacturer part numbers on file: 570281 (Mcmellon Bros., Incorporated Dba Mc Mellon Brothers Inc), 570281 (Unison Industries Llc).
Key specifications for 570281: Thread Series: UNEF; Thread Pitch Diameters: +0.4173 TO 0.4208 INCHES IN; Drive Point Width: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Thread Direction: RIGHT-HAND. 13 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.