The Washer,key, cataloged under National Stock Number 5310-00-893-6638, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-893-6638 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Internal Straight Key Width | 0.172 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.252 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN |
| Style Designator | KEY |
| Material Document and Classification | MIL-C-15726 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.719 INCHES NOMINAL IN |
| Material Thickness | 0.062 INCHES NOMINAL IN |
| Material | COPPER ALLOY 706 OR COPPER ALLOY 715 OVERALL |
| Internal Key Quantity | 1 |
| Hole Diameter | 0.755 INCHES MINIMUM AND 0.765 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 |
|---|---|
| 6074B | 5/9 Secondary reference U.S. Government activity |
| 6074B | C/1 Advisory reference — outside the item-of-supply concept Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| 200113NPC129 | 5/9 Secondary reference U.S. Government activity |
| 200110AAL895 | 5/9 Secondary reference U.S. Government activity |
| 6074B | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
NSN 5310-00-893-6638 is a Washer,key, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-893-6638: Internal Straight Key Width: 0.172 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.252 INCHES MINIMUM AND 0.257 INCHES MAXIMUM IN; Style Designator: KEY; Material Document and Classification: MIL-C-15726 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 9 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.