The Nut,plain,hexagon, cataloged under National Stock Number 5310-00-262-5818, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-262-5818 |
| Primary Part Number | 366891PC18 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Width Across Flats | 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Material Document and Classification | QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR QQ-S-763 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-763 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-763 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-763 FED SPEC 6TH MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.375 INCHES IN |
| Departure From Cited Designator | AS MODIFIED BY WIDTH ACROSS |
| Nondefinitive Spec/std Data | B GROUP AND C TYPE AND 2 STYLE |
| Nut Height | 0.320 INCHES MINIMUM AND 0.337 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 305 OR STEEL COMP 316 OR STEEL COMP 347 OVERALL |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 366891PC18 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| FFN836GPBTYPE3STYLE2 | 4/1 Identification reference U.S. Government activity |
NSN 5310-00-262-5818 is a Nut,plain,hexagon, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-262-5818 has 1 manufacturer part number on file: 366891PC18 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 366891PC18: Width Across Flats: 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM IN; Thread Series: UNF; Material Document and Classification: QQ-S-763 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A582 ASSN STD 2ND MATERIAL RESPONSE OR QQ-S-763 FED SPEC 3RD MATERIAL RESPONSE OR QQ-S-763 FED SPEC 4TH MATERIAL RESPONSE OR QQ-S-763 FED SPEC 5TH MATERIAL RESPONSE OR QQ-S-763 FED SPEC 6TH MATERIAL RESPONSE OVERALL; 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.