The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-334-0551, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-334-0551 |
| Item Name | Nut,self-Locking,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Width Across Flats | 0.310 INCHES MAXIMUM IN |
| Nut Length | 0.435 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE BOSS |
| Surface Treatment Document and Classification | QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Thread Series | UNJC |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Hardness Rating | 49.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS5085 ASSN STD 1ST MATERIAL RESPONSE OR AMS4130 ASSN STD 2ND MATERIAL RESPONSE NUT |
| Material Document and Classification | AMS5085 ASSN STD SINGLE MATERIAL RESPONSE SHELL |
| Material Document and Classification | AMS5639 ASSN STD 1ST MATERIAL RESPONSE OR AMS5514 ASSN STD 2ND MATERIAL RESPONSE BOSS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.112 INCHES IN |
| Pilot Diameter | 0.217 INCHES MAXIMUM IN |
| Pilot Length | 0.130 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.317 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM NUT |
| Surface Treatment | CADMIUM AND CHROMATE SHELL |
| Surface Treatment | CADMIUM AND CHROMATE BOSS |
| Countersink Angle | 101.0 DEGREES MAXIMUM LOCKING INSERT |
| Nut Style | SPLINE (FLOATING) |
| Thread Class | 3B |
| Thread Quantity Per Inch | 40 |
| Material | STEEL COMP 1050 SHELL |
| Material | STEEL COMP 1050 OR STEEL COMP 4130 NUT |
| Material | STEEL COMP 304 OR STEEL COMP 305 BOSS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MS14200-04-6 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-334-0551 is a Nut,self-Locking,spline, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-334-0551: Width Across Flats: 0.310 INCHES MAXIMUM IN; Nut Length: 0.435 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE NUT; Surface Treatment Document and Classification: QQ-P-416 TY 2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE BOSS. 27 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.