The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-338-5719, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-338-5719 |
| Primary Part Number | MN23-9 |
| Item Name | Nut,self-Locking,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc |
| Status | ACTIVE |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Nominal Thread Size | 0.563 INCHES IN |
| Thread Quantity Per Inch | 18 |
| 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 |
|---|---|
| MN23-9 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 92435-9 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| MN23-9 PRIMARY | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| 5310-021-9 | 5/9 Secondary reference Aidc/aerospace Industrial Development Corp. Dba Aidc |
| RMLH11922-9 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-338-5719 is a Nut,self-Locking,spline, manufactured by Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-338-5719 has 3 manufacturer part numbers on file: MN23-9 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 92435-9 (Sps Technologies, Llc Dba PB Fasteners), MN23-9 (Hi-Shear Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-620-5854. Verify interchangeability with system specifications before substitution.
Key specifications for MN23-9: Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Nominal Thread Size: 0.563 INCHES IN; Thread Quantity Per Inch: 18. 3 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.