The Nut,plain,round, cataloged under National Stock Number 5310-01-264-1642, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Safran Power Usa Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-264-1642 |
| Primary Part Number | 121901-01 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Safran Power Usa Llc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-F-13924,CL 1,GR A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNEF |
| Material Document and Classification | ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Size | 0.375 INCHES IN |
| Nut Diameter | 0.625 INCHES NOMINAL IN |
| Nut Thickness | 0.150 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE OVERALL |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1212 OR STEEL COMP 1213 OR STEEL COMP 1117 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 |
|---|---|
| 121901-01 PRIMARY | Safran Power Usa Llc (USA) |
| Reference | Meaning |
|---|---|
| 121901-01 | 3/9 Design control — primary reference Ge Aviation Systems Llc |
| 121901-01 | 5/9 Secondary reference Lucas Aerospace Power Equipment Corporation |
NSN 5310-01-264-1642 is a Nut,plain,round, manufactured by Safran Power Usa Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-264-1642 has 1 manufacturer part number on file: 121901-01 (Safran Power Usa Llc).
Key specifications for 121901-01: Surface Treatment Document and Classification: MIL-F-13924,CL 1,GR A MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNEF; Material Document and Classification: ASTM A108 ASSN STD ALL MATERIAL RESPONSES OVERALL; Nominal Thread Size: 0.375 INCHES IN. 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.