The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-274-9364, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 13 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-274-9364 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | CANCELLED |
| Lubrication | SOLUBLE LUBRICANT |
| Width Across Flats | 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Bearing Surface Finish | 125.0 MICROINCHES |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.435 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 88.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED OR WASHER FACED |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| F1801-070U | 5/1 Secondary reference Esna, Llc |
| 5310002749364 | 5/9 Secondary reference E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| LFLH1801-070U | 5/9 Secondary reference Harvard Industries Inc |
| MS21045-7 | 3/2 Design control — primary reference U.S. Government activity |
| MS21045-7 | 5/9 Secondary reference U.S. Government activity |
| 2GH813 | C/1 Advisory reference — outside the item-of-supply concept Oshkosh Corp |
| 404 891 | 5/1 Secondary reference Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company |
| LFLH1801-070U | 5/1 Secondary reference Esna, Llc |
| 406685 | 5/9 Secondary reference Piper Industrial Manufacturing Company, Llc Div Piper Industrial Manufacturing Company |
| 27GH720 | 5/1 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| YE3183 | 5/1 Secondary reference Lamson and Sessions Co the |
| F1801-070U | 5/9 Secondary reference Harvard Industries Inc |
| 27FH-720UN | 5/1 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5310-00-274-9364 is a Nut,self-Locking,hexagon, classified under FSC 5310, Nuts and Washers. Status: cancelled.
3 possible matches (shared part number, not a government interchangeability claim): 5865-01-067-2120, 5310-01-164-7486, 5935-01-425-1205. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-274-9364: Lubrication: SOLUBLE LUBRICANT; Width Across Flats: 0.679 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN; Bearing Surface Finish: 125.0 MICROINCHES; Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 17 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.
NSN 5310-00-274-9364 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.