The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-123-2397, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-123-2397 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES BOTTOM |
| Surface Finish | 63.0 MICROINCHES SHOULDER FACE |
| Surface Finish | 63.0 MICROINCHES TOP |
| Shoulder Height | 0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED AND RECESSED BOTH SIDES |
| Material Document and Classification | ASTM A515,GRADE 70 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.907 INCHES MINIMUM AND 4.912 INCHES MAXIMUM IN |
| Material Thickness | 0.190 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Shoulder Diameter | 3.500 INCHES NOMINAL IN |
| Recess Diameter | 3.007 INCHES MINIMUM AND 3.012 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 2.757 INCHES MINIMUM AND 2.762 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 |
|---|---|
| 803-2177142-5XX-18 | 3/2 Design control — primary reference U.S. Government activity |
| 803-2177142-514-18 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5310-01-123-2397 is a Washer,shouldered and Recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-123-2397: Surface Finish: 63.0 MICROINCHES BOTTOM; Surface Finish: 63.0 MICROINCHES SHOULDER FACE; Surface Finish: 63.0 MICROINCHES TOP; Shoulder Height: 0.045 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN. 13 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.