The Washer,keyway, cataloged under National Stock Number 5310-00-281-2471, 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 11 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 11 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-281-2471 |
| Primary Part Number | SG1374PC19 |
| 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 | 1.560 INCHES MINIMUM AND 1.570 INCHES MAXIMUM IN |
| Internal Keyway Width | 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.000 INCHES NOMINAL IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.625 INCHES NOMINAL IN |
| Material | STEEL COMP 2 OVERALL |
| Hole Diameter | 1.870 INCHES MINIMUM AND 1.875 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 |
|---|---|
| SG1374PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1400PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2065PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SD1516APC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1395PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1377PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1397PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG2179PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| SG1392PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| S810F PRIMARY | Circor Pumps North America Llc (USA) |
| SD2013PC19 PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| SG2065PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| S810F | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1397PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SD2013PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1400PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SD1516APC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1395PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1377PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1374PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG2179PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
| SG1392PC19 | 5/9 Secondary reference Siemens Energy, Inc. |
NSN 5310-00-281-2471 is a Washer,keyway, manufactured by Circor Pumps North America Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-281-2471 has 11 manufacturer part numbers on file: SG1374PC19 (Circor Pumps North America Llc), SG1400PC19 (Circor Pumps North America Llc), SG2065PC19 (Circor Pumps North America Llc), SD1516APC19 (Circor Pumps North America Llc), SG1395PC19 (Circor Pumps North America Llc) and 6 more.
Key specifications for SG1374PC19: Distance From Centerline to Bottom of Internal Keyway: 1.560 INCHES MINIMUM AND 1.570 INCHES MAXIMUM IN; Internal Keyway Width: 0.124 INCHES MINIMUM AND 0.126 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-890 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 3.000 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.