The Nut,self-Locking,plate, cataloged under National Stock Number 5310-01-286-5445, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 29 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-286-5445 |
| Primary Part Number | ST3M726C08M |
| Item Name | Nut,self-Locking,plate |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Plate Thickness | 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Nut Length | 0.989 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE SHELL |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE WASHER |
| Thread Series | UNJC |
| Plate Width | 0.568 INCHES MAXIMUM IN |
| Temp Rating | -65.0 FAHRENHEIT MINIMUM AND 225.0 FAHRENHEIT MAXIMUM DEGF |
| Mounting Hole Arrangement Style | 2 HOLES |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE SHELL |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE NUT |
| Material Document and Classification | MIL-R-6855,CLASS 1,GRADE 60 MIL SPEC SINGLE MATERIAL RESPONSE SEAL |
| Material Document and Classification | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE WASHER |
| Mounting Hole Diameter | 0.098 INCHES MINIMUM AND 0.103 INCHES MAXIMUM IN |
| Nut Counterbore Depth | 0.100 INCHES MINIMUM WASHER IN |
| Features Provided | FLOATING NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.164 INCHES IN |
| Counterbore Diameter | 0.255 INCHES MAXIMUM WASHER IN |
| Distance From Aperture Center to Mounting Hole Center | 0.339 INCHES MINIMUM AND 0.349 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 | 0.387 INCHES MINIMUM AND 0.553 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE WASHER |
| Surface Treatment | PASSIVATE SHELL |
| Nut Style | PLATE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | RUBBER SYNTHETIC SEAL |
| 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 |
|---|---|
| 3T3M726C08M | Howmet Global Fastening Systems Inc (USA) |
| ST3M726C08M PRIMARY | The Boeing Company Div Defense (USA) |
| 3T3M726C08M | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| BSN726C08M | C/1 Advisory reference — outside the item-of-supply concept Bristol Industries, Llc |
| BSN726C08 | 3/9 Design control — primary reference Bristol Industries, Llc |
| 3T3M726C08M | 5/2 Secondary reference U.S. Government activity |
| NS20275-08 | 5/9 Secondary reference U.S. Government activity |
| F52673-08 | 5/9 Secondary reference Howmet Global Fastening Systems Inc |
NSN 5310-01-286-5445 is a Nut,self-Locking,plate, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-286-5445 has 3 manufacturer part numbers on file: 3T3M726C08M (Howmet Global Fastening Systems Inc), ST3M726C08M (The Boeing Company Div Defense), 3T3M726C08M (Bristol Industries, Llc).
Key specifications for ST3M726C08M: Lubrication: DRY FILM LUBRICANT; Overall Height: 0.640 INCHES MAXIMUM IN; Plate Thickness: 0.010 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Nut Length: 0.989 INCHES MAXIMUM IN. 29 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.