The Washer,keyway, cataloged under National Stock Number 5310-00-281-2469, 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 26 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 24 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-281-2469 |
| Primary Part Number | SG2516PC19 |
| 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 | 1.152 INCHES NOMINAL 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 | 3.625 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM IN |
| Material | STEEL COMP 2 OVERALL |
| Hole Diameter | 2.062 INCHES MINIMUM AND 2.063 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 |
|---|---|
| SG2516PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1754PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2498PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG3121PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2406PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1736PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1945PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2161PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2508PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2411PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG3135PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2833PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2167PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1762PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| S810JB PRIMARY | Circor Pumps North America Llc (USA) |
| SG1750PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1889PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2096PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2158PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2982PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG1736PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1754PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3117PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2161PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2422PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2406PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1945PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2096PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2833PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2498PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1757PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1889PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1942PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1753PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2163PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2414PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2516PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG3435PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2512PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1813PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 5310-00-281-2469 is a Washer,keyway, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-281-2469 has 26 manufacturer part numbers on file: SG2516PC19 (Circor Pumps North America Llc), SG1754PC19 (Circor Pumps North America Llc), SG2498PC19 (Circor Pumps North America Llc), SG3121PC19 (Circor Pumps North America Llc), SG2406PC19 (Circor Pumps North America Llc) and 21 more.
Key specifications for SG2516PC19: Distance From Centerline to Bottom of Internal Keyway: 1.152 INCHES NOMINAL 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: 3.625 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.