The Washer,recessed, cataloged under National Stock Number 5310-00-262-5451, 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10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-262-5451 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN |
| Material Thickness | 0.084 INCHES MINIMUM AND 0.104 INCHES MAXIMUM IN |
| Recess Diameter | 1.677 INCHES MINIMUM AND 1.697 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1330 OR STEEL COMP 4130 OVERALL |
| Hole Diameter | 1.510 INCHES MINIMUM AND 1.525 INCHES MAXIMUM IN |
| Recess Angle | 89.0 DEGREES MINIMUM AND 91.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 10309410 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| NAS143-24C | 5/1 Secondary reference U.S. Government activity |
| MS20002C24 | 5/9 Secondary reference U.S. Government activity |
| MS20002C24 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-262-5451 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-262-5451: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED; Material Document and Classification: 66 FED STD ALL MATERIAL RESPONSES OVERALL; Outside Diameter: 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM IN. 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.