The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-339-6523, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Paolo Astori Spa. Government technical data includes 25 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-339-6523 |
| Primary Part Number | BACN10JR4CFD |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Paolo Astori Spa |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.032 INCHES NOMINAL IN |
| Nut Length | 1.292 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.516 INCHES MAXIMUM IN |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Material Document and Classification | AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Mounting Hole Diameter | 0.098 INCHES NOMINAL IN |
| Nut Counterbore Depth | 0.060 INCHES NOMINAL FIRST END IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Counterbore Diameter | 0.200 INCHES MAXIMUM FIRST END 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 |
| Center to Center Distance Between Mounting Holes Along Length | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Nut Height | 0.281 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| BACN10JR4CFD | Paolo Astori Spa (ITA) |
| K51602-4 | Howmet Global Fastening Systems Inc (USA) |
| BACN10JR4CFD | Boeing Defence Australia Ltd (AUS) |
| BACN10JR4CFD | Boeing Defence Australia Ltd Div Defense, Space & Security (AUS) |
| Reference | Meaning |
|---|---|
| 102F9201-4 | 5/9 Secondary reference Harvard Industries Inc |
| T8092C428CDBC | 5/9 Secondary reference Republic Fastener Mfg. Corp. Use CAGE Code 52828 for Cataloging. |
| BACN10JR4CFD | 3/2 Design control — primary reference U.S. Government activity |
| K51602-4BCAC | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-01-339-6523 is a Nut,self-Locking,plate, manufactured by Paolo Astori Spa, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-339-6523 has 4 manufacturer part numbers on file: BACN10JR4CFD (Paolo Astori Spa), K51602-4 (Howmet Global Fastening Systems Inc), BACN10JR4CFD (Boeing Defence Australia Ltd), BACN10JR4CFD (Boeing Defence Australia Ltd Div Defense, Space & Security).
Key specifications for BACN10JR4CFD: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.032 INCHES NOMINAL IN; Nut Length: 1.292 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL. 25 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.