The Nut,plain,round, cataloged under National Stock Number 5310-00-401-0666, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-401-0666 |
| Primary Part Number | 369A1022 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Hardness Rating | 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | MIL-S-6758,COMP 4130,COND D MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 6371,COMP 4130 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.548 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| 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 | F |
| Part Number | Manufacturer |
|---|---|
| 369A1022 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 369A1022 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| 10408195 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-00-401-0666 is a Nut,plain,round, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-401-0666 has 1 manufacturer part number on file: 369A1022 (The Boeing Company).
Key specifications for 369A1022: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNS; Hardness Rating: 27.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM; Material Document and Classification: MIL-S-6758,COMP 4130,COND D MIL SPEC SINGLE MATERIAL RESPONSE OR AMS 6371,COMP 4130 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 10 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.