The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-481-9422, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bristol Industries, Llc. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 5 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-481-9422 |
| Primary Part Number | BFN719C5M4 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Plate Thickness | 0.045 INCHES NOMINAL IN |
| Nut Length | 1.296 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.610 INCHES NOMINAL IN |
| Material Document and Classification | AMS5525, AMS5732, AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Height | 0.518 INCHES NOMINAL IN |
| Nut Style | PLATE (FLOATING) |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| BFN719C5M4 PRIMARY | Bristol Industries, Llc (USA) |
| F50339-5-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M432C5M4 | The Boeing Company Div Defense (USA) |
| MCRF220C5M4 PRIMARY | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| ST3M719C5M4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| NS202211-054-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-481-9422 is a Nut,self-Locking,plate, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-481-9422 has 5 manufacturer part numbers on file: BFN719C5M4 (Bristol Industries, Llc), F50339-5-4 (Howmet Global Fastening Systems Inc), ST3M432C5M4 (The Boeing Company Div Defense), MCRF220C5M4 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems), ST3M719C5M4 (The Boeing Company Div Defense).
Key specifications for BFN719C5M4: Plate Thickness: 0.045 INCHES NOMINAL IN; Nut Length: 1.296 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Plate Width: 0.610 INCHES NOMINAL IN. 11 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.