The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-325-1981, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 30 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-325-1981 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN |
| Nut Length | 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE BASE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.865 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.208 INCHES MINIMUM AND 0.218 INCHES MAXIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Specification/standard Data | 80205-NAS1803 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Counterbore Diameter | 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM NUT IN |
| Distance From Aperture Center to Mounting Hole Center | 0.557 INCHES MINIMUM AND 0.567 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 1.123 INCHES MINIMUM AND 1.127 INCHES MAXIMUM IN |
| Nut Height | 0.310 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Surface Treatment | PASSIVATE BASE |
| Surface Treatment | PASSIVATE SHELL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4130 OR STEEL COMP 8740 NUT |
| Material | STEEL COMP 631 BASE |
| Material | STEEL COMP 631 SHELL |
| Nut Mounting Provision | STRAIGHT 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 |
|---|---|
| NAS1803-3B5 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-325-1981 is a Nut,self-Locking,plate, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-325-1981: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN; Nut Length: 1.360 INCHES MINIMUM AND 1.390 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL. 30 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.