The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-086-8561, 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 11 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-086-8561 |
| Primary Part Number | ST7M223T8 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Width Across Flats | 1.000 INCHES NOMINAL IN |
| Thread Series | UNJS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.719 INCHES IN |
| Nut Height | 0.242 INCHES NOMINAL IN |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM BOTH ENDS |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | TITANIUM ALLOY OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| ST7M223T8 PRIMARY | The Boeing Company Div Defense (USA) |
| ST7M223T8 | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| ST7M223T8 | Nelson Aero Space, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10122101 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST7M223T8 | 5/9 Secondary reference Bailey Hose Inc |
NSN 5310-01-086-8561 is a Nut,plain,hexagon, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-086-8561 has 3 manufacturer part numbers on file: ST7M223T8 (The Boeing Company Div Defense), ST7M223T8 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), ST7M223T8 (Nelson Aero Space, Inc.).
Key specifications for ST7M223T8: Width Across Flats: 1.000 INCHES NOMINAL IN; Thread Series: UNJS; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.719 INCHES IN. 11 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.