The Washer,shouldered and Recessed, cataloged under National Stock Number 5310-01-124-0526, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-124-0526 |
| Item Name | Washer,shouldered and Recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Shoulder Height | 0.020 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Style Designator | SHOULDERED AND RECESSED |
| Material Document and Classification | ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.310 INCHES MINIMUM AND 0.314 INCHES MAXIMUM IN |
| Material Thickness | 0.034 INCHES MINIMUM AND 0.038 INCHES MAXIMUM IN |
| Shoulder Diameter | 0.186 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Recess Diameter | 0.225 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 303 OVERALL |
| Hole Diameter | 0.115 INCHES MINIMUM AND 0.120 INCHES MAXIMUM IN |
| Recess Angle | 100.0 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 |
|---|---|
| 3516770-2 | 3/2 Design control — primary reference U.S. Government activity |
| 3516770 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-124-0526 is a Washer,shouldered and Recessed, classified under FSC 5310, Nuts and Washers. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4730-01-522-0796. Verify interchangeability with system specifications before substitution.
Key specifications for 5310-01-124-0526: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Shoulder Height: 0.020 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN; Style Designator: SHOULDERED AND RECESSED; Material Document and Classification: ASTM A582,COND A ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.