The Washer,recessed, cataloged under National Stock Number 5310-00-274-9569, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-274-9569 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Top Recess Diameter | 0.284 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN |
| Bottom Recess Diameter | 0.284 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN |
| Top Recess Angle | 90.0 DEGREES NOMINAL |
| Style Designator | RECESSED BOTH SIDES |
| Material Document and Classification | AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.521 INCHES MINIMUM AND 0.541 INCHES MAXIMUM IN |
| Material Thickness | 0.109 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Bottom Recess Angle | 90.0 DEGREES NOMINAL |
| Material | STEEL COMP 1213 OVERALL |
| Hole Diameter | 0.276 INCHES MINIMUM AND 0.279 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 |
|---|---|
| SR7916 | 5/9 Secondary reference Ambac International Corporation Div Ambac International |
| SR7916 | 3/9 Design control — primary reference Marine Engine Specialties Div of Mesco Tectonics Inc |
| 3A462 | 5/9 Secondary reference D N K |
| SR7916 | 5/9 Secondary reference D N K |
| SR7916 | 5/9 Secondary reference Cooper Cameron Corp Ajax-Superior Div |
NSN 5310-00-274-9569 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-274-9569: Top Recess Diameter: 0.284 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN; Bottom Recess Diameter: 0.284 INCHES MINIMUM AND 0.287 INCHES MAXIMUM IN; Top Recess Angle: 90.0 DEGREES NOMINAL; Style Designator: RECESSED BOTH SIDES. 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.