The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-448-1091, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-448-1091 |
| Primary Part Number | 701-4323640 P/N 49 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Hardness Rating | 25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES IN |
| Specification/standard Data | 81349-MIL-S-1222 GOVERNMENT SPECIFICATION |
| Nut Height | 0.617 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 2B |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFERED |
| 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 |
|---|---|
| 701-4323667 P/N 38 | Naval Sea Systems Command (USA) |
| 701-4323640 P/N 49 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 3/4-16UNC-2B | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 3/4-16UNF-2B | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5310-01-448-1091 is a Nut,plain,hexagon, manufactured by Naval Sea Systems Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-448-1091 has 2 manufacturer part numbers on file: 701-4323667 P/N 38 (Naval Sea Systems Command), 701-4323640 P/N 49 (Naval Sea Systems Command).
Key specifications for 701-4323640 P/N 49: Width Across Flats: 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Hardness Rating: 25.0 ROCKWELL C MINIMUM AND 34.0 ROCKWELL C MAXIMUM; Thread Direction: RIGHT-HAND. 12 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.