The Nut,self-Locking,plate, cataloged under National Stock Number 5310-00-778-9280, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 24 specifications, cited from the U.S. Government catalog. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-778-9280 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.065 INCHES MAXIMUM IN |
| Nut Length | 0.914 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Hardness Rating | 49.0 ROCKWELL C MAXIMUM |
| Mounting Hole Countersink Angle | 98.0 DEGREES MINIMUM AND 102.0 DEGREES MAXIMUM |
| Mounting Hole Diameter | 0.130 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Mounting Provision Location | OPPOSITE NUT PROJECTION SIDE |
| Nut Counterbore Depth | 0.062 INCHES MINIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Counterbore Diameter | 0.317 INCHES MINIMUM NUT IN |
| Distance From Aperture Center to Mounting Hole Center | 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.328 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| Nut Mounting Provision | COUNTERSUNK HOLES |
| 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 |
|---|---|
| 12620-054BC | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| MS21055L5K | 2/2 Government specification standardization U.S. Government activity |
| K3000-5BC | 5/9 Secondary reference Howmet Global Fastening Systems Inc. Div Microdot Products |
| T7S524BC | 5/9 Secondary reference Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
| 12620-054BC | 5/9 Secondary reference U.S. Government activity |
| K3000-5BC | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| KM52LHTA55-054BC | 5/9 Secondary reference Harvard Industries Inc |
| T7S524BC | 5/9 Secondary reference Republic Fastener Mfg. Corp. Use CAGE Code 52828 for Cataloging. |
NSN 5310-00-778-9280 is a Nut,self-Locking,plate, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-778-9280: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.065 INCHES MAXIMUM IN; Nut Length: 0.914 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 24 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.