The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-413-1704, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Aqua-Chem, Inc. Dba Aqua-Chem Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-413-1704 |
| Primary Part Number | 506-8237 ITEM 38 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Aqua-Chem, Inc. Dba Aqua-Chem Inc |
| Status | ACTIVE |
| Width Across Flats | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.258 INCHES MINIMUM AND 0.273 INCHES MAXIMUM IN |
| Surface Treatment | ZINC OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Bearing Surface Type | WASHER FACED |
| 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 |
|---|---|
| 506-8237 ITEM 38 PRIMARY | Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA) |
| Reference | Meaning |
|---|---|
| 869-8361 | 5/9 Secondary reference Aqua-Chem, Inc. |
| 506-8237 ITEM 38 | 3/9 Design control — primary reference Aqua-Chem, Inc. |
NSN 5310-01-413-1704 is a Nut,self-Locking,hexagon, manufactured by Aqua-Chem, Inc. Dba Aqua-Chem Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-413-1704 has 1 manufacturer part number on file: 506-8237 ITEM 38 (Aqua-Chem, Inc. Dba Aqua-Chem Inc).
Key specifications for 506-8237 ITEM 38: Width Across Flats: 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN. 12 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.