The Nut,plain,castellated,hexagon, cataloged under National Stock Number 5310-00-220-3013, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Taylor Manufacturing Co Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-220-3013 |
| Primary Part Number | C5A27558 |
| Item Name | Nut,plain,castellated,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Taylor Manufacturing Co Inc |
| Status | ACTIVE |
| Width Across Flats | 1.062 INCHES NOMINAL IN |
| Thread Series | UNF |
| Hole Configuration Style | CONFIGURATION B |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Nut Height | 0.406 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED |
| Hole Type and Quantity | 2 DRILLED |
| 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 |
|---|---|
| C5A27558 | Taylor Manufacturing Co Inc (USA) |
| Reference | Meaning |
|---|---|
| C5A27558 | 3/9 Design control — primary reference Speco Corp |
NSN 5310-00-220-3013 is a Nut,plain,castellated,hexagon, manufactured by Taylor Manufacturing Co Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-220-3013 has 1 manufacturer part number on file: C5A27558 (Taylor Manufacturing Co Inc).
Key specifications for C5A27558: Width Across Flats: 1.062 INCHES NOMINAL IN; Thread Series: UNF; Hole Configuration Style: CONFIGURATION B; Thread Direction: RIGHT-HAND. 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.