The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-200-0285, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Arlo Corporation. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-200-0285 |
| Primary Part Number | C249 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Arlo Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.562 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Nut Height | 0.266 INCHES NOMINAL IN |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| C249 PRIMARY | Arlo Corporation (USA) |
| Reference | Meaning |
|---|---|
| 5310PL1290761 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| C249 | 3/9 Design control — primary reference Cissell Manufacturing Company Dba Cissell Mfg |
NSN 5310-01-200-0285 is a Nut,plain,hexagon, manufactured by Arlo Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-200-0285 has 1 manufacturer part number on file: C249 (Arlo Corporation).
Key specifications for C249: Width Across Flats: 0.562 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.312 INCHES IN. 10 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.