The Nut,self-Locking,castellated,hex, cataloged under National Stock Number 5310-01-355-2415, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is William Powell Company, the Dba Powell Valve Div the Starflo Corporation. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Nut,self-Locking,castellated,hex |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (CAGE 48422); Naval Inventory Control Point Mechanicsburg (CAGE 03950) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-355-2415 |
| Primary Part Number | F-403293 |
| Item Name | Nut,self-Locking,castellated,hex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | William Powell Company, the Dba Powell Valve Div the Starflo Corporation |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| F-403293 PRIMARY | William Powell Company, the Dba Powell Valve Div the Starflo Corporation (USA) |
| F-403293CP | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| F-40293 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-355-2415 is a Nut,self-Locking,castellated,hex, manufactured by William Powell Company, the Dba Powell Valve Div the Starflo Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-355-2415 has 2 manufacturer part numbers on file: F-403293 (William Powell Company, the Dba Powell Valve Div the Starflo Corporation), F-403293CP (Naval Inventory Control Point Mechanicsburg).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-357-6241. Verify interchangeability with system specifications before substitution.
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.