The Nut,plain,round, cataloged under National Stock Number 5310-01-256-9252, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing. Government technical data includes 15 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-256-9252 |
| Primary Part Number | 339532-3 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing |
| Status | ACTIVE |
| Thread Series | UN |
| Material Document and Classification | MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.310 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.000 INCHES IN |
| Nut Diameter | 2.500 INCHES NOMINAL IN |
| Counterbore Diameter | 2.030 INCHES NOMINAL BOTH ENDS IN |
| Drive Point Depth | 0.090 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Nut Thickness | 0.550 INCHES NOMINAL IN |
| Countersink Angle | 105.0 DEGREES MINIMUM AND 115.0 DEGREES MAXIMUM BOTH ENDS |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 4130 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 |
|---|---|
| 339532-3 | Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing (USA) |
| 339532-3 | A and M Aerospace, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 339532-3 | 3/2 Design control — primary reference U.S. Government activity |
| 5310PL1462534 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5310-01-256-9252 is a Nut,plain,round, manufactured by Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-256-9252 has 2 manufacturer part numbers on file: 339532-3 (Mercer Products & Manufacturing Company Dba Mercer Products & Manufacturing Co Div Mercer Products & Manufacturing), 339532-3 (A and M Aerospace, Inc.).
Key specifications for 339532-3: Thread Series: UN; Material Document and Classification: MIL-S-6758 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Drive Point Width: 0.310 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.