The Washer,recessed, cataloged under National Stock Number 5310-00-209-1689, 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 Legacy Am&m. 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 | 5310-00-209-1689 |
| Primary Part Number | 7R4-19D |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Surface Finish | 100.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-225/6 FED SPEC 1ST MATERIAL RESPONSE OR QQ-A-225/4 FED SPEC 2ND MATERIAL RESPONSE OR QQ-A-225/5 FED SPEC 3RD MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.443 INCHES MINIMUM AND 1.446 INCHES MAXIMUM IN |
| Recess Depth | 0.104 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN |
| Material Thickness | 0.075 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OR ALUMINUM ALLOY 2014 OR ALUMINUM ALLOY 2017 OVERALL |
| Hole Diameter | 1.149 INCHES MINIMUM AND 1.152 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 7R4-19D PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 5310-00-209-1689 is a Washer,recessed, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-209-1689 has 1 manufacturer part number on file: 7R4-19D (The Boeing Company Div Legacy Am&m).
Key specifications for 7R4-19D: Surface Finish: 100.0 MICROINCHES ALL SURFACES; Overall Height: 0.155 INCHES MINIMUM AND 0.160 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-A-696 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED. 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.