The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-550-6554, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Ibuy Stores, Inc.. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-550-6554 |
| Primary Part Number | 227821 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Ibuy Stores, Inc. |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| 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 |
|---|---|
| 227821 PRIMARY | Ibuy Stores, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 227821 | 5/9 Secondary reference Graybar International, Inc. |
NSN 5310-01-550-6554 is a Nut,self-Locking,hexagon, manufactured by Ibuy Stores, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-550-6554 has 1 manufacturer part number on file: 227821 (Ibuy Stores, Inc.).
Key specifications for 227821: Thread Direction: RIGHT-HAND; Part Name Assigned by Controlling Agency: NUT, 5/16", NYLON LOCK; End Item Identification: 3895-01-539-0585, AIRFIELD DAMAGE REPAIR KIT. 1 specification is 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.