The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-568-4688, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-568-4688 |
| Primary Part Number | 0318913845 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing |
| Status | ACTIVE |
| Width Across Flats | 5.380 INCHES NOMINAL IN |
| Thread Series | NPS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 4.000 INCHES IN |
| Nut Height | 0.800 INCHES NOMINAL IN |
| Drilled Hole Diameter | 5.000 INCHES NOMINAL IN |
| Thread Class | 2B |
| Hole Nominal Thread Diameter | 4.500 INCHES IN |
| Thread Quantity Per Inch | 8 |
| Material | IRON ALLOY OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 0318913845 PRIMARY | Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing (USA) |
NSN 5310-01-568-4688 is a Nut,self-Locking,hexagon, manufactured by Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-568-4688 has 1 manufacturer part number on file: 0318913845 (Anvil International, Inc. Dba Beck Manufacturing Div Beck Manufacturing).
Key specifications for 0318913845: Width Across Flats: 5.380 INCHES NOMINAL IN; Thread Series: NPS; Thread Direction: RIGHT-HAND; Nominal Thread Size: 4.000 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.