The Washer,recessed, cataloged under National Stock Number 5310-00-020-2428, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-020-2428 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Style Designator | RECESSED |
| Material Document and Classification | AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.186 INCHES MINIMUM AND 1.210 INCHES MAXIMUM IN |
| Recess Depth | 0.181 INCHES MINIMUM AND 0.212 INCHES MAXIMUM IN |
| Material Thickness | 0.038 INCHES MINIMUM AND 0.041 INCHES MAXIMUM IN |
| Material | STEEL COMP 321 OVERALL |
| Hole Diameter | 0.440 INCHES MINIMUM AND 0.445 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 |
|---|---|
| 570366 | 3/1 Design control — primary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| MIL-STD-130 | 4/1 Identification reference U.S. Government activity |
| 570366 | 5/9 Secondary reference Royal Oak Gage, Inc |
| 570366 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-020-2428 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-020-2428: Overall Height: 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN; Style Designator: RECESSED; Material Document and Classification: AMS 5510 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.186 INCHES MINIMUM AND 1.210 INCHES MAXIMUM IN. 7 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.