The Washer,recessed, cataloged under National Stock Number 5310-01-686-7290, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-686-7290 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Top Recess Diameter | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Bottom Recess Diameter | 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN |
| Top Recess Angle | 89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM |
| Style Designator | RECESSED BOTH SIDES |
| Outside Diameter | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN |
| Material Thickness | 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM IN |
| Bottom Recess Angle | 89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM |
| Material | ALUMINUM ALLOY 5052 OR ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.250 INCHES MINIMUM AND 0.260 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 |
| Reference | Meaning |
|---|---|
| 140-007-16A17B4 | 3/2 Design control — primary reference U.S. Government activity |
| 140-007 | D/9 Drawing number reference only U.S. Government activity |
NSN 5310-01-686-7290 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-686-7290: Top Recess Diameter: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Bottom Recess Diameter: 0.020 INCHES MINIMUM AND 0.030 INCHES MAXIMUM IN; Top Recess Angle: 89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM; Style Designator: RECESSED BOTH SIDES. 9 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.