The Washer,flat, cataloged under National Stock Number 5310-01-666-1529, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Calzoni Srl. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-666-1529 |
| Primary Part Number | D8411407 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Calzoni Srl |
| Status | ACTIVE |
| Overall Diameter | 14.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLACK OVERALL |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC POLYESTER OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 6.2 MILLIMETERS NOMINAL MM |
| Thickness | 1.5 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 3995AS1206-1 | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| D8411407 PRIMARY | Calzoni Srl (ITA) |
NSN 5310-01-666-1529 is a Washer,flat, manufactured by Calzoni Srl, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-666-1529 has 2 manufacturer part numbers on file: 3995AS1206-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), D8411407 (Calzoni Srl).
Key specifications for D8411407: Overall Diameter: 14.0 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Color: BLACK OVERALL; Special Features: MATERIAL IS BLACK DELRIN ZELLAMID 1400. 8 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.