The Nut,self-Locking,round, cataloged under National Stock Number 5310-01-135-4160, 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 14 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-135-4160 |
| Primary Part Number | ST3M831-16 |
| Item Name | Nut,self-Locking,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | AMS2401 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Material Document and Classification | AMS 6304 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6487 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.000 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Thickness | 0.829 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Drive Point Quantity | 12 |
| Thread Class | 3B |
| Thread Quantity Per Inch | 12 |
| Material | STEEL COMP 601 OR STEEL COMP H11 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 |
|---|---|
| 80311-16 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M831-16 PRIMARY | The Boeing Company Div Defense (USA) |
| SP51148-16 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| 113LH11922H16 | 5/9 Secondary reference Harvard Industries Inc |
| 10109729 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-135-4160 is a Nut,self-Locking,round, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-135-4160 has 3 manufacturer part numbers on file: 80311-16 (Sps Technologies, Llc Dba PB Fasteners), ST3M831-16 (The Boeing Company Div Defense), SP51148-16 (Howmet Global Fastening Systems Inc).
Key specifications for ST3M831-16: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: AMS2401 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Temp Rating: 450.0 FAHRENHEIT MAXIMUM DEGF. 14 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.