The Washer,flat, cataloged under National Stock Number 5310-01-579-4208, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-579-4208 |
| Primary Part Number | 3855AS402-2 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Overall Diameter | 1.650 INCHES NOMINAL IN |
| Specification/standard Data | 05047-ASME Y14.5M-1994 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Peripheral Shape Style | ROUND |
| Material | RUBBER BUTADIENE NITRILE OVERALL |
| Hole Diameter | 1.150 INCHES NOMINAL IN |
| Thickness | 0.500 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3855AS402-2 | Bright Enterprises, Inc. Dba Bright Plastics (USA) |
| 3855AS402-2 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 3855AS402-2 | 7/2 Vendor item drawing reference Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| 3855AS402-2 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-579-4208 is a Washer,flat, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-579-4208 has 2 manufacturer part numbers on file: 3855AS402-2 (Bright Enterprises, Inc. Dba Bright Plastics), 3855AS402-2 (The Boeing Company).
Key specifications for 3855AS402-2: Overall Diameter: 1.650 INCHES NOMINAL IN; Specification/standard Data: 05047-ASME Y14.5M-1994 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD; Special Features: ITEM WEIGHT: 0.1LBS LBS; Peripheral Shape Style: ROUND. 6 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.
NSN 5310-01-579-4208 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.