The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-362-5938, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-362-5938 |
| Primary Part Number | B18241A025 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Width Across Flats | 4.8 MILLIMETERS MINIMUM AND 5.0 MILLIMETERS MAXIMUM MM |
| Thread Tolerance Class | 6H INTERNAL |
| Surface Treatment Document and Classification | QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | ISO M |
| Thread Pitch in Millimeters | 0.45 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 2.5 MILLIMETERS MM |
| Nut Height | 1.7 MILLIMETERS MINIMUM AND 2.0 MILLIMETERS MAXIMUM MM |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Nut Style | HEXAGON |
| 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 |
|---|---|
| B18241A025 PRIMARY | The American Society of Mechanical Engineers (USA) |
| B18241A025 | Lockheed Martin Corporation (USA) |
| Reference | Meaning |
|---|---|
| B18241A025 | 5/2 Secondary reference U.S. Government activity |
| B18241A025 | 5/9 Secondary reference Bolden Die Supply Co |
NSN 5310-01-362-5938 is a Nut,plain,hexagon, manufactured by The American Society of Mechanical Engineers, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-362-5938 has 2 manufacturer part numbers on file: B18241A025 (The American Society of Mechanical Engineers), B18241A025 (Lockheed Martin Corporation).
Key specifications for B18241A025: Width Across Flats: 4.8 MILLIMETERS MINIMUM AND 5.0 MILLIMETERS MAXIMUM MM; Thread Tolerance Class: 6H INTERNAL; Surface Treatment Document and Classification: QQ-P-416, TY 2, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: ISO M. 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.