The Nut,plain,round, cataloged under National Stock Number 5310-01-281-6499, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 17 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 | 5310-01-281-6499 |
| Primary Part Number | 1698AS151 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-STD-171,FINISH 5.3.1.2 MIL STD 1ST TREATMENT RESPONSE OR MIL-STD-171,FINISH 5.3.2.2. MIL STD 2ND TREATMENT RESPONSE OVERALL |
| Thread Series | UN |
| Temp Rating | 1540.0 FAHRENHEIT MINIMUM AND 1580.0 FAHRENHEIT MAXIMUM DEGF |
| Hardness Rating | 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | ASTM A304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Drive Point Width | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.750 INCHES IN |
| Nut Diameter | 2.480 INCHES MINIMUM AND 2.500 INCHES MAXIMUM IN |
| Drive Point Depth | 0.532 INCHES NOMINAL IN |
| Nut Thickness | 0.730 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Surface Treatment | PHOSPHATE MANGANESE OR PHOSPHATE ZINC OVERALL |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 4140H 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 |
|---|---|
| 1698AS151 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5310-01-281-6499 is a Nut,plain,round, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-281-6499 has 1 manufacturer part number on file: 1698AS151 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 1698AS151: Surface Treatment Document and Classification: MIL-STD-171,FINISH 5.3.1.2 MIL STD 1ST TREATMENT RESPONSE OR MIL-STD-171,FINISH 5.3.2.2. MIL STD 2ND TREATMENT RESPONSE OVERALL; Thread Series: UN; Temp Rating: 1540.0 FAHRENHEIT MINIMUM AND 1580.0 FAHRENHEIT MAXIMUM DEGF; Hardness Rating: 24.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM. 17 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.