The Washer,keyway, cataloged under National Stock Number 5310-00-281-2468, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-281-2468 |
| Primary Part Number | S2110KA0463 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 1.252 INCHES NOMINAL IN |
| Internal Keyway Width | 0.125 INCHES NOMINAL IN |
| Material Document and Classification | -9L-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.500 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.625 INCHES NOMINAL IN |
| Material | STEEL COMP C OVERALL |
| Hole Diameter | 2.375 INCHES MINIMUM AND 2.380 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 |
| Part Number | Manufacturer |
|---|---|
| S2110KA0463 PRIMARY | Circor Pumps North America Llc (USA) |
| S2110KA PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| S2110KA | 5/9 Secondary reference Siemens Energy, Inc. |
| S2110KA0463 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 5310-00-281-2468 is a Washer,keyway, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-281-2468 has 2 manufacturer part numbers on file: S2110KA0463 (Circor Pumps North America Llc), S2110KA (Circor Pumps North America Llc).
Key specifications for S2110KA0463: Distance From Centerline to Bottom of Internal Keyway: 1.252 INCHES NOMINAL IN; Internal Keyway Width: 0.125 INCHES NOMINAL IN; Material Document and Classification: -9L-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 4.500 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.