The Washer,keyway, cataloged under National Stock Number 5310-00-923-4863, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Circor Naval Solutions Llc Dba Warren Pumps. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-923-4863 |
| Primary Part Number | 702A0021J028A |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Circor Naval Solutions Llc Dba Warren Pumps |
| Status | ACTIVE |
| Distance From Centerline to Bottom of Internal Keyway | 1.688 INCHES NOMINAL IN |
| Internal Keyway Width | 0.250 INCHES NOMINAL IN |
| Surface Finish | 32.0 MICROINCHES TOP |
| Outside Diameter | 2.741 INCHES MINIMUM AND 2.742 INCHES MAXIMUM IN |
| Internal Keyway Quantity | 1 |
| Material Thickness | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 2.250 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 |
|---|---|
| 702E0021 | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
| 702A0021J028A PRIMARY | Circor Naval Solutions Llc Dba Warren Pumps (USA) |
NSN 5310-00-923-4863 is a Washer,keyway, manufactured by Circor Naval Solutions Llc Dba Warren Pumps, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-923-4863 has 2 manufacturer part numbers on file: 702E0021 (Circor Naval Solutions Llc Dba Warren Pumps), 702A0021J028A (Circor Naval Solutions Llc Dba Warren Pumps).
Key specifications for 702A0021J028A: Distance From Centerline to Bottom of Internal Keyway: 1.688 INCHES NOMINAL IN; Internal Keyway Width: 0.250 INCHES NOMINAL IN; Surface Finish: 32.0 MICROINCHES TOP; Outside Diameter: 2.741 INCHES MINIMUM AND 2.742 INCHES MAXIMUM 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.