The Washer,keyway, cataloged under National Stock Number 5310-00-281-2465, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-281-2465 |
| Primary Part Number | S810EA |
| 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 | 0.706 INCHES MINIMUM AND 0.716 INCHES MAXIMUM IN |
| Internal Keyway Width | 0.124 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.250 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.620 INCHES MINIMUM AND 0.630 INCHES MAXIMUM IN |
| Material | STEEL COMP 1561 OVERALL |
| Hole Diameter | 1.312 INCHES MINIMUM AND 1.317 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 |
|---|---|
| S810EA PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG3314PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3314PC19 | 5/9 Secondary reference Circor Pumps North America Llc |
| S810EA | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 5310-00-281-2465 is a Washer,keyway, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-281-2465 has 1 manufacturer part number on file: S810EA (Circor Pumps North America Llc).
Key specifications for S810EA: Distance From Centerline to Bottom of Internal Keyway: 0.706 INCHES MINIMUM AND 0.716 INCHES MAXIMUM IN; Internal Keyway Width: 0.124 INCHES MINIMUM AND 0.125 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.250 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.