The Nut,self-Locking,plate, cataloged under National Stock Number 5310-00-101-5840, 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 28 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-101-5840 |
| Primary Part Number | ST3M541-3A2 |
| 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 |
| Nut Length | 0.948 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT |
| Surface Treatment Document and Classification | QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE BASE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Plate Width | 0.454 INCHES MAXIMUM IN |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Removable Nut Manufacturer Part Number | ST3M445A3M2 |
| 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 | 0.190 INCHES IN |
| Specification/standard Data | 76401-ST3-541 MANUFACTURERS STANDARD |
| Counterbore Diameter | 0.194 INCHES MINIMUM NUT IN |
| Distance From Aperture Center to Mounting Hole Center | 0.344 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Center to Center Distance Between Mounting Holes Along Length | 0.688 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM NUT |
| Surface Treatment | CADMIUM BASE |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL NUT |
| Material | STEEL BASE |
| Nut Mounting Provision | STRAIGHT HOLES |
| Removable Nut Manufacturer Code | 76301 |
| 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 |
|---|---|
| ST3M541-3A2 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| ST3M541-3A2 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| RMF19421-2-3 | 5/9 Secondary reference Esna, Llc |
| ST3M541-3A2 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| BFN541-3-2 | 5/9 Secondary reference Bristol Industries, Llc |
| RMF19421-2-3 | 5/9 Secondary reference Harvard Industries Inc |
| F14421-2-3 | 5/9 Secondary reference U.S. Government activity |
| F14421-2-3 | 5/9 Secondary reference Harvard Industries Inc |
| F4906N3-2 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| ST3M541-3A2 | 5/2 Secondary reference U.S. Government activity |
| F49069N3-2 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
| 10116553 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| F49069-3-2 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-00-101-5840 is a Nut,self-Locking,plate, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-101-5840 has 2 manufacturer part numbers on file: ST3M541-3A2 (Howmet Global Fastening Systems Inc), ST3M541-3A2 (Bristol Industries, Llc).
Key specifications for ST3M541-3A2: Lubrication: DRY FILM LUBRICANT; Nut Length: 0.948 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE NUT; Surface Treatment Document and Classification: QQ-P-416,TY2,CL2 FED SPEC SINGLE TREATMENT RESPONSE BASE. 28 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.