The Washer,self Aligning, cataloged under National Stock Number 5310-01-239-9006, 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 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-239-9006 |
| Primary Part Number | 856004-01 |
| Item Name | Washer,self Aligning |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| General Characteristics Item Description | O.D.1.900 IN.;I.D.0.578 IN.;0.260IN.THICK;MATERIAL 4340 STEEL IN |
| Functional Description | USED ON FUSELAGE SHROUD FITTING |
| 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 |
|---|---|
| 856004-01 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 856004-01 | 7/2 Vendor item drawing reference U.S. Government activity |
NSN 5310-01-239-9006 is a Washer,self Aligning, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-239-9006 has 1 manufacturer part number on file: 856004-01 (The Boeing Company Div Defense).
Key specifications for 856004-01: General Characteristics Item Description: O.D.1.900 IN.;I.D.0.578 IN.;0.260IN.THICK;MATERIAL 4340 STEEL IN; Functional Description: USED ON FUSELAGE SHROUD FITTING; End Item Identification: F-4C ACFT. 2 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.