The Washer,keyway, cataloged under National Stock Number 5310-00-596-4561, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Boeing Distribution Services X, Inc.. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-596-4561 |
| Primary Part Number | 201244-2 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Boeing Distribution Services X, Inc. |
| Status | ACTIVE |
| External Keyway Width | 0.390 INCHES NOMINAL IN |
| External Keyway Quantity | 4 |
| Material Document and Classification | QQ-A-561 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 5.100 INCHES NOMINAL IN |
| Material Thickness | 0.003 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY 1100 OVERALL |
| Hole Diameter | 4.240 INCHES NOMINAL IN |
| External Keyway Length | 0.280 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 201244-2 PRIMARY | Boeing Distribution Services X, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 201244-2 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| 201244-2 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 5310-00-596-4561 is a Washer,keyway, manufactured by Boeing Distribution Services X, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-596-4561 has 1 manufacturer part number on file: 201244-2 (Boeing Distribution Services X, Inc.).
Key specifications for 201244-2: External Keyway Width: 0.390 INCHES NOMINAL IN; External Keyway Quantity: 4; Material Document and Classification: QQ-A-561 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 5.100 INCHES NOMINAL IN. 8 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.