The Washer,recessed, cataloged under National Stock Number 5310-00-558-9926, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-558-9926 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-250/5,ALCLAD FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN |
| Material Thickness | 0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN |
| Recess Diameter | 0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM IN |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.170 INCHES MINIMUM AND 0.178 INCHES MAXIMUM IN |
| Recess Angle | 119.5 DEGREES MINIMUM AND 120.5 DEGREES MAXIMUM |
| 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 |
|---|---|
| S1448906-4 | 3/2 Design control — primary reference U.S. Government activity |
| S1448906-4 | 5/9 Secondary reference The Boeing Company |
NSN 5310-00-558-9926 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-558-9926: Style Designator: RECESSED; Material Document and Classification: QQ-A-250/5,ALCLAD FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.344 INCHES MINIMUM AND 0.406 INCHES MAXIMUM IN; Material Thickness: 0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN. 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.