The Washer,key, cataloged under National Stock Number 5310-01-128-4115, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-128-4115 |
| 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 | 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN |
| Overall Distance Including Keys | 2.469 INCHES MAXIMUM IN |
| Heat Treatment | ANNEALED |
| Hardness Rating | 70.0 ROCKWELL B MINIMUM AND 90.0 ROCKWELL B MAXIMUM |
| Style Designator | KEY |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 2.000 INCHES MINIMUM AND 2.030 INCHES MAXIMUM IN |
| Material Thickness | 0.053 INCHES MINIMUM AND 0.063 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 2 CLASS |
| External Key Quantity | 15 |
| Internal Prebent Key Length | 0.094 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| External Prebent Key Width | 0.204 INCHES MINIMUM AND 0.234 INCHES MAXIMUM IN |
| Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OVERALL |
| Hole Diameter | 1.583 INCHES MINIMUM AND 1.603 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 |
|---|---|
| MS19070-083 | 2/2 Government specification standardization U.S. Government activity |
NSN 5310-01-128-4115 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-128-4115: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Internal Prebent Key Width: 0.250 INCHES MINIMUM AND 0.290 INCHES MAXIMUM IN; Overall Distance Including Keys: 2.469 INCHES MAXIMUM IN; Heat Treatment: ANNEALED. 16 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.