The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-028-3589, 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 22 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-028-3589 |
| Primary Part Number | BFN719C3M4 |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bristol Industries, Llc |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.035 INCHES MAXIMUM IN |
| Nut Length | 0.970 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.421 INCHES MAXIMUM IN |
| Mounting Hole Arrangement Style | 2 HOLES |
| Material Document and Classification | AMS 5525 ASSN STD ALL MATERIAL RESPONSES OR AMS 5732 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.250 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Specification/standard Data | 76301-ST3-719 MANUFACTURERS STANDARD |
| Distance From Aperture Center to Mounting Hole Center | 0.343 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 0.686 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN |
| Nut Height | 0.438 INCHES MAXIMUM IN |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| 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 |
|---|---|
| BFN719C3M4 PRIMARY | Bristol Industries, Llc (USA) |
| F50339-3-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| MCRF220C3M4 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| NGN502DK3-4 | 5/9 Secondary reference Northrop Grumman Systems Corp Integrated Systems Sector |
| NS202211-02-04 | 5/9 Secondary reference U.S. Government activity |
| ST3M719C3M4 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| 10122001 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| F12090-4-3 | 5/9 Secondary reference Harvard Industries Inc |
| F12090-4-3 | C/1 Advisory reference — outside the item-of-supply concept Esna, Llc |
| NS202211-02-4 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-028-3589 is a Nut,self-Locking,plate, manufactured by Bristol Industries, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-028-3589 has 3 manufacturer part numbers on file: BFN719C3M4 (Bristol Industries, Llc), F50339-3-4 (Howmet Global Fastening Systems Inc), MCRF220C3M4 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems).
2 possible matches (shared part number, not a government interchangeability claim): 5910-01-266-4055, 6145-01-678-2956. Verify interchangeability with system specifications before substitution.
Key specifications for BFN719C3M4: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.035 INCHES MAXIMUM IN; Nut Length: 0.970 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 22 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.