The Washer,recessed, cataloged under National Stock Number 5310-00-087-4571, 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9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-087-4571 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.580 INCHES NOMINAL IN |
| Material Thickness | 0.045 INCHES NOMINAL IN |
| Recess Diameter | 1.034 INCHES NOMINAL IN |
| Surface Treatment | ANODIZE OVERALL |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Hole Diameter | 0.945 INCHES MINIMUM AND 0.950 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| 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 |
|---|---|
| K213383 | 3/9 Design control — primary reference Davey Compressor Co Div of Keco Industries Inc |
| K213383 | 3/2 Design control — primary reference U.S. Government activity |
| K213383 | 5/9 Secondary reference Drs Environmental Systems Inc |
| 213383 | 5/9 Secondary reference Kidde-Fenwal, Llc |
| 213383 | 5/9 Secondary reference Davey Compressor Co Div of Keco Industries Inc |
NSN 5310-00-087-4571 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 1285-01-098-8966. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-00-087-4571: Style Designator: RECESSED; Material Document and Classification: QQ-A-250/4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.580 INCHES NOMINAL IN; Material Thickness: 0.045 INCHES NOMINAL IN. 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.