The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-323-2733, 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 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-323-2733 |
| Primary Part Number | ST7M223T16 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Width Across Flats | 1.500 INCHES NOMINAL IN |
| Thread Series | UNS |
| Material Document and Classification | AMS 4965 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 1.250 INCHES IN |
| Nut Height | 0.338 INCHES NOMINAL IN |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 100.0 DEGREES MAXIMUM NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 14 |
| 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 |
|---|---|
| ST7M223T16 | Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division (USA) |
| ST7M223T16 PRIMARY | The Boeing Company Div Defense (USA) |
| ST7M223T16 | Nelson Aero Space, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 10121303 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST7M223T16 | 5/9 Secondary reference Bailey Hose Inc |
NSN 5310-00-323-2733 is a Nut,plain,hexagon, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-323-2733 has 3 manufacturer part numbers on file: ST7M223T16 (Parker-Hannifin Corporation Dba Pneutronics Div Stratoflex Product Division), ST7M223T16 (The Boeing Company Div Defense), ST7M223T16 (Nelson Aero Space, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5305-00-958-5885. Verify interchangeability with system specifications before substitution.
Key specifications for ST7M223T16: Width Across Flats: 1.500 INCHES NOMINAL IN; Thread Series: UNS; Material Document and Classification: AMS 4965 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 12 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.