The Nut,plain,extended Washer,hexago, cataloged under National Stock Number 5310-00-997-8972, 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 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-997-8972 |
| Primary Part Number | 32-411764-3 |
| 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 | 3.995 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN |
| Width Across Flats | 3.750 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL JOINT (UNJ) |
| Washer Thickness | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | AMS6427 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 3.125 INCHES IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 8 |
| 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 |
|---|---|
| 32-411764-3 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-00-997-8972 is a Nut,plain,extended Washer,hexago, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-997-8972 has 1 manufacturer part number on file: 32-411764-3 (The Boeing Company Div Defense).
Key specifications for 32-411764-3: Overall Height: 1.320 INCHES NOMINAL IN; Washer Outside Diameter: 3.995 INCHES MINIMUM AND 4.005 INCHES MAXIMUM IN; Width Across Flats: 3.750 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL JOINT (UNJ). 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.