The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-418-7921, 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 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-418-7921 |
| Primary Part Number | F53280-3-05 |
| 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 | 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN |
| Nut Length | 1.365 INCHES MINIMUM AND 1.385 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, TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.866 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 FIRST END IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Counterbore Diameter | 0.195 INCHES MINIMUM AND 0.200 INCHES MAXIMUM FIRST END 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 | 0.865 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE NUT |
| Surface Treatment | PASSIVATE SHELL |
| Nut Style | PLATE (FLOATING) |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 4130 OR STEEL COMP 8740 NUT |
| 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 |
| Part Number | Manufacturer |
|---|---|
| F53280-3-05 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| NS203016-3-05 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-418-7921 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-418-7921 has 1 manufacturer part number on file: F53280-3-05 (Howmet Global Fastening Systems Inc).
Key specifications for F53280-3-05: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.023 INCHES MINIMUM AND 0.027 INCHES MAXIMUM IN; Nut Length: 1.365 INCHES MINIMUM AND 1.385 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL. 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.