The Nut,plain,round, cataloged under National Stock Number 5310-00-832-3752, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Div Hydraulic Accumulator Division. Government technical data includes 15 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-832-3752 |
| Primary Part Number | A57-206 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation Div Hydraulic Accumulator Division |
| Status | ACTIVE |
| Thread Series | UN |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.250 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.500 INCHES IN |
| Nut Diameter | 3.250 INCHES NOMINAL IN |
| Drive Point Depth | 0.125 INCHES NOMINAL IN |
| Nut Thickness | 0.406 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL NUT |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 1020 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 |
|---|---|
| A57-206 PRIMARY | Parker-Hannifin Corporation Div Hydraulic Accumulator Division (USA) |
NSN 5310-00-832-3752 is a Nut,plain,round, manufactured by Parker-Hannifin Corporation Div Hydraulic Accumulator Division, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-832-3752 has 1 manufacturer part number on file: A57-206 (Parker-Hannifin Corporation Div Hydraulic Accumulator Division).
1 possible match (shared part number, not a government interchangeability claim): 5920-01-546-3583. Verify interchangeability with system specifications before substitution.
Key specifications for A57-206: Thread Series: UN; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Drive Point Width: 0.250 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND. 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.