The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-722-1626, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Fastenal Company. Government technical data includes 11 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-722-1626 |
| Primary Part Number | 11241789 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Fastenal Company |
| Status | ACTIVE |
| Width Across Flats | 0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Locking Feature | TOP LOCK |
| Nut Height | 0.320 INCHES MINIMUM AND 0.415 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| 11241789 PRIMARY | Fastenal Company (USA) |
| Reference | Meaning |
|---|---|
| TPLK.GRC.ECO.05 | D/9 Drawing number reference only Fastenal Company |
NSN 5310-01-722-1626 is a Nut,self-Locking,hexagon, manufactured by Fastenal Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-722-1626 has 1 manufacturer part number on file: 11241789 (Fastenal Company).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-723-2558. Verify interchangeability with system specifications before substitution.
Key specifications for 11241789: Width Across Flats: 0.5510 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.375 INCHES IN. 11 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.