The Nut,plain,wing, cataloged under National Stock Number 5310-00-487-5329, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Oshkosh Defense Llc. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-487-5329 |
| Primary Part Number | 1TC18 |
| Item Name | Nut,plain,wing |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Oshkosh Defense Llc |
| Status | ACTIVE |
| Body Diameter | 0.550 INCHES NOMINAL IN |
| Thread Series | UNS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Nut Style | WING |
| Thread Class | 2B |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Wing Spread Width | 1.242 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1TC18 | Oshkosh Defense Llc (USA) |
| Reference | Meaning |
|---|---|
| LP2290 | 5/9 Secondary reference Cooper Industries Inc Cooper Hand Tools Div Turner Plant |
| 1TC18 | 5/9 Secondary reference Oshkosh Corp |
| LP2290 | 3/9 Design control — primary reference Quick Start Products & Solutions, Inc |
NSN 5310-00-487-5329 is a Nut,plain,wing, manufactured by Oshkosh Defense Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-487-5329 has 1 manufacturer part number on file: 1TC18 (Oshkosh Defense Llc).
Key specifications for 1TC18: Body Diameter: 0.550 INCHES NOMINAL IN; Overall Height: 0.595 INCHES NOMINAL IN; Thread Series: UNS; Thread Direction: RIGHT-HAND. 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.