The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-053-9802, 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 15 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-053-9802 |
| Primary Part Number | MN23-7 |
| 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 |
| Lubrication | DRY FILM LUBRICANT |
| Surface Treatment Document and Classification | QQ-P-416,TYPE II,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Diameter | 0.828 INCHES MAXIMUM IN |
| Pilot Length | 0.162 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.344 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | SPLINE |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 8740 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 |
|---|---|
| MN23-7 | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| MN23-7 | Hi-Shear Corporation (USA) |
| SP50324-7 | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| C7530-7 | 7/2 Vendor item drawing reference U.S. Government activity |
| 77377-7 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 5310PL1675800 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 77377-7 | 3/2 Design control — primary reference U.S. Government activity |
| 5310PL0743347 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| LYH11922-7 | C/1 Advisory reference — outside the item-of-supply concept Esna, Llc |
| LH11922-7 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-053-9802 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 5310-01-053-9802 has 3 manufacturer part numbers on file: MN23-7 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), MN23-7 (Hi-Shear Corporation), SP50324-7 (Howmet Global Fastening Systems Inc).
Key specifications for MN23-7: Lubrication: DRY FILM LUBRICANT; Surface Treatment Document and Classification: QQ-P-416,TYPE II,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM. 15 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.