The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-00-345-3774, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-345-3774 |
| Primary Part Number | 68A410669-2001 |
| Item Name | Nut,plain,extended Washer,hexago |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Washer Outside Diameter | 1.151 INCHES MINIMUM AND 1.153 INCHES MAXIMUM IN |
| Width Across Flats | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.220 INCHES NOMINAL IN |
| Material Document and Classification | QQ-C-530,COND H FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nut Counterbore Depth | 0.440 INCHES NOMINAL NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Counterbore Diameter | 0.562 INCHES MINIMUM AND 0.564 INCHES MAXIMUM NUT IN |
| Countersink Angle | 90.0 DEGREES NOMINAL NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | COPPER ALLOY 172 OR COPPER ALLOY 173 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 |
|---|---|
| 68A410669-2001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-00-345-3774 is a Nut,plain,extended Washer,hexago, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-345-3774 has 1 manufacturer part number on file: 68A410669-2001 (The Boeing Company Div Defense).
Key specifications for 68A410669-2001: Overall Height: 0.750 INCHES NOMINAL IN; Washer Outside Diameter: 1.151 INCHES MINIMUM AND 1.153 INCHES MAXIMUM IN; Width Across Flats: 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 14 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.