The Nut,plain,round, cataloged under National Stock Number 5310-00-043-1939, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-043-1939 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| Thread Series | UNS |
| Hardness Rating | 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM |
| Thread Pitch Diameters | +5.0519 TO 5.0602 INCHES IN |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Drive Point Width | 0.610 INCHES MINIMUM AND 0.635 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 5.106 INCHES IN |
| Nut Diameter | 6.730 INCHES MINIMUM AND 6.760 INCHES MAXIMUM IN |
| Drive Point Depth | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Nut Thickness | 0.860 INCHES MINIMUM AND 0.885 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND ZINC OVERALL |
| Drive Point Quantity | 4 |
| Nut Style | ROUND |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OVERALL |
| 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 |
|---|---|
| MS19068-262 | 2/2 Government specification standardization U.S. Government activity |
| MS19068-262 | 8/1 NATO reproduction reference Makine Ve Kimya Endustrisi Anonim Sirketi Agir Silah Fabrikasi Subesi |
NSN 5310-00-043-1939 is a Nut,plain,round, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-043-1939: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL; Thread Series: UNS; Hardness Rating: 66.0 ROCKWELL B MINIMUM AND 92.0 ROCKWELL B MAXIMUM; Thread Pitch Diameters: +5.0519 TO 5.0602 INCHES IN. 16 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.