The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-359-4400, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Spectrum Microwave, Inc.. Government technical data includes 14 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 | 5310-01-359-4400 |
| Primary Part Number | 3-3438 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Spectrum Microwave, Inc. |
| Status | ACTIVE |
| Thread Series | UNF |
| Material Document and Classification | QQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.438 INCHES IN |
| Nut Diameter | 2.125 INCHES NOMINAL IN |
| Drive Point Depth | 0.150 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Thickness | 0.500 INCHES NOMINAL IN |
| Drive Point Diameter | 0.136 INCHES NOMINAL IN |
| Drive Point Quantity | 3 |
| Nut Style | ROUND |
| Thread Class | 3B |
| Thread Quantity Per Inch | 18 |
| Material | COPPER ALLOY 630 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 |
|---|---|
| 3-3438 PRIMARY | Spectrum Microwave, Inc. (USA) |
NSN 5310-01-359-4400 is a Nut,self-Locking,round, manufactured by Spectrum Microwave, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-359-4400 has 1 manufacturer part number on file: 3-3438 (Spectrum Microwave, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-642-1048. Verify interchangeability with system specifications before substitution.
Key specifications for 3-3438: Thread Series: UNF; Material Document and Classification: QQ-C-465 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND; Nominal Thread Size: 1.438 INCHES IN. 14 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.