The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-040-4729, 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 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-040-4729 |
| Primary Part Number | MF19058-4-2BAC |
| 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 | 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN |
| Nut Length | 0.807 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 | 0.500 INCHES MAXIMUM IN |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.125 INCHES MINIMUM NUT IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Specification/standard Data | 81205-BACN10JQ MANUFACTURERS STANDARD |
| Counterbore Diameter | 0.254 INCHES MINIMUM NUT IN |
| Distance From Aperture Center to Mounting Hole Center | 0.276 INCHES MINIMUM AND 0.286 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 0.560 INCHES MINIMUM AND 0.564 INCHES MAXIMUM IN |
| Nut Height | 0.349 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1536 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 |
|---|---|
| RMF9206M-2-4 | Esna, Llc (USA) |
| MF19058-4-2BAC PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| BACN10JQ42 | The Boeing Company Div Commercial (USA) |
| BRFM22A2-4 | Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems (USA) |
| Reference | Meaning |
|---|---|
| BRFM22A2-4 | 5/9 Secondary reference Amerace Corp Wheel Products Div |
| RMF9206M-2-4 | 5/9 Secondary reference Harvard Industries Inc |
| VN253A048-2 | 3/2 Design control — primary reference U.S. Government activity |
| MT8260S428S-2 | 5/9 Secondary reference Sps Technologies, Llc Dba Cherry Aerospace Div Div Cherry Aerospace |
| BACN10JQ42 | 5/9 Secondary reference U.S. Government activity |
| NS103201-048-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-040-4729 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-040-4729 has 4 manufacturer part numbers on file: RMF9206M-2-4 (Esna, Llc), MF19058-4-2BAC (Howmet Global Fastening Systems Inc), BACN10JQ42 (The Boeing Company Div Commercial), BRFM22A2-4 (Republic Fastener Mfg. Corp. Dba Arconic Fastening Systems).
Key specifications for MF19058-4-2BAC: Lubrication: DRY FILM LUBRICANT; Plate Thickness: 0.026 INCHES MINIMUM AND 0.036 INCHES MAXIMUM IN; Nut Length: 0.807 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.