The Nut,self-Locking,plate, cataloged under National Stock Number 5310-00-285-9055, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 29 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-285-9055 |
| Primary Part Number | F52664-4 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN |
| Nut Length | 1.296 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.658 INCHES MAXIMUM IN |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 225.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Hardness Rating | 55.0 SHORE DUROMETER A MINIMUM AND 65.0 SHORE DUROMETER A MAXIMUM |
| Material Document and Classification | MIL-S-5059 MIL SPEC ALL MATERIAL RESPONSES SHELL |
| Material Document and Classification | AMS5735 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | MIL-R-6855,CLASS 1 GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE SEAL |
| Material Document and Classification | MIL-S-5059 MIL SPEC ALL MATERIAL RESPONSES WASHER |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.113 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.100 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Specification/standard Data | 76301-ST3-493 MANUFACTURERS STANDARD |
| Counterbore Diameter | 0.315 INCHES MAXIMUM 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 |
| Center to Center Distance Between Mounting Holes Along Length | 0.998 INCHES MINIMUM AND 1.002 INCHES MAXIMUM IN |
| Nut Height | 0.450 INCHES MINIMUM AND 0.687 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE WASHER |
| Surface Treatment | PASSIVATE SHELL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | IRON ALLOY 660 NUT |
| 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 |
|---|---|
| F52664-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| ST3M493C4M | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| F49281-4 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| NS202724-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-285-9055 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-285-9055 has 1 manufacturer part number on file: F52664-4 (Howmet Global Fastening Systems Inc).
Key specifications for F52664-4: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.765 INCHES MAXIMUM IN; Plate Thickness: 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM IN; Nut Length: 1.296 INCHES MAXIMUM IN. 29 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.