The Nut,self-Locking,spline, cataloged under National Stock Number 5310-01-331-7222, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-331-7222 |
| Primary Part Number | 03A102-3L |
| Item Name | Nut,self-Locking,spline |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Nut Diameter | 0.352 INCHES MINIMUM AND 0.362 INCHES MAXIMUM IN |
| Nut Height | 0.125 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Thread Class | 3B |
| Thread Quantity Per Inch | 32 |
| Material | NICKEL ALLOY 718 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 |
|---|---|
| BH102-3L | Bristol Industries, Llc (USA) |
| VN3201YL02 | Howmet Global Fastening Systems Inc. Div Voi-Shan Products (USA) |
| 03A102-3L PRIMARY | Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems (USA) |
| 83671-3L | Sps Technologies, Llc Dba PB Fasteners (USA) |
| H52765-3L | Howmet Global Fastening Systems Inc (USA) |
| Reference | Meaning |
|---|---|
| VN3201YL02 | 3/9 Design control — primary reference U.S. Government activity |
| H52765 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
NSN 5310-01-331-7222 is a Nut,self-Locking,spline, manufactured by Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-331-7222 has 5 manufacturer part numbers on file: BH102-3L (Bristol Industries, Llc), VN3201YL02 (Howmet Global Fastening Systems Inc. Div Voi-Shan Products), 03A102-3L (Northrop Grumman Systems Corp Dba Northrop Grumman Computing Systems), 83671-3L (Sps Technologies, Llc Dba PB Fasteners), H52765-3L (Howmet Global Fastening Systems Inc).
Key specifications for 03A102-3L: Lubrication: DRY FILM LUBRICANT; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Direction: RIGHT-HAND. 10 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.