The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-511-0243, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Reid Supply Company. Government technical data includes 13 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 | 5310-01-511-0243 |
| Primary Part Number | HNC-3 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Reid Supply Company |
| Status | ACTIVE |
| Width Across Flats | 0.680 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Supplementary Features | CAGE CALLS THIS: HARDENED HES NUT 3/8-16 |
| Features Provided | CASEHARDENED |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Nut Height | 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN |
| Surface Treatment | OXIDE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| 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 |
|---|---|
| HNC-3 PRIMARY | Reid Supply Company (USA) |
NSN 5310-01-511-0243 is a Nut,plain,hexagon, manufactured by Reid Supply Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-511-0243 has 1 manufacturer part number on file: HNC-3 (Reid Supply Company).
Key specifications for HNC-3: Width Across Flats: 0.680 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Supplementary Features: CAGE CALLS THIS: HARDENED HES NUT 3/8-16; Features Provided: CASEHARDENED. 13 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.