The Nut,plain,round, cataloged under National Stock Number 5310-01-053-2890, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Simmonds Precision Products Inc. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-053-2890 |
| Primary Part Number | S44172 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Simmonds Precision Products Inc |
| Status | ACTIVE |
| Width Across Flats | 0.562 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Material Document and Classification | QQ-A-225/6,T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Diameter | 0.625 INCHES NOMINAL IN |
| Nut Thickness | 0.218 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Countersink Angle | 45.0 DEGREES NOMINAL NUT |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | ALUMINUM ALLOY 2024 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 |
|---|---|
| S44172 PRIMARY | Simmonds Precision Products Inc (USA) |
NSN 5310-01-053-2890 is a Nut,plain,round, manufactured by Simmonds Precision Products Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-053-2890 has 1 manufacturer part number on file: S44172 (Simmonds Precision Products Inc).
Key specifications for S44172: Width Across Flats: 0.562 INCHES NOMINAL IN; Surface Treatment Document and Classification: MIL-A-8625,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Material Document and Classification: QQ-A-225/6,T351 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 14 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.