The Washer,key, cataloged under National Stock Number 5310-00-498-5504, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-498-5504 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Internal Prebent Key Width | 0.110 INCHES MINIMUM AND 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM0.120 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 0.875 INCHES MAXIMUM0.875 INCHES MAXIMUM IN |
| Heat Treatment | ANNEALEDANNEALED |
| Hardness Rating | 70.0 ROCKWELL B MINIMUM AND 70.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL B MAXIMUM90.0 ROCKWELL B MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 0.625 INCHES MINIMUM AND 0.625 INCHES MINIMUM AND 0.640 INCHES MAXIMUM0.640 INCHES MAXIMUM IN |
| Material Thickness | 0.038 INCHES MINIMUM AND 0.038 INCHES MINIMUM AND 0.046 INCHES MAXIMUM0.046 INCHES MAXIMUM IN |
| External Key Quantity | 99 |
| Internal Prebent Key Length | 0.062 INCHES MINIMUM AND 0.062 INCHES MINIMUM AND 0.093 INCHES MAXIMUM0.093 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.110 INCHES MINIMUM AND 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM0.120 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Hole Diameter | 0.406 INCHES MINIMUM AND 0.406 INCHES MINIMUM AND 0.421 INCHES MAXIMUM0.421 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 |
|---|---|
| MS19070-003 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-00-498-5504 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-498-5504: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.110 INCHES MINIMUM AND 0.110 INCHES MINIMUM AND 0.120 INCHES MAXIMUM0.120 INCHES MAXIMUM IN; Overall Distance Including Keys: 0.875 INCHES MAXIMUM0.875 INCHES MAXIMUM IN; Heat Treatment: ANNEALEDANNEALED. 15 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.