The Coupling Half,shaft, cataloged under National Stock Number 3010-00-529-2139, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Circor Pumps North America Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3010-00-529-2139 |
| Primary Part Number | S2820J |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Circor Pumps North America Llc |
| Status | ACTIVE |
| Body Style | FLEXIBLE KEYWAY INSERT TYPE, THROUGH BORE |
| Material Document and Classification | MIL-S-18411, CLASS I MIL SPEC SINGLE MATERIAL RESPONSE |
| Outside Diameter | 1.745 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT |
| Bore Diameter | 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Material | STEEL |
| 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 |
|---|---|
| S2820J PRIMARY | Circor Pumps North America Llc (USA) |
| Reference | Meaning |
|---|---|
| W441BBS10200 | 5/9 Secondary reference Imo Industries Inc Delroyd Worm Gear Div |
| W441BBS10200 | 5/9 Secondary reference Siemens Energy, Inc. |
| W441BBS | C/1 Advisory reference — outside the item-of-supply concept Siemens Energy, Inc. |
NSN 3010-00-529-2139 is a Coupling Half,shaft, manufactured by Circor Pumps North America Llc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-00-529-2139 has 1 manufacturer part number on file: S2820J (Circor Pumps North America Llc).
Key specifications for S2820J: Body Style: FLEXIBLE KEYWAY INSERT TYPE, THROUGH BORE; Material Document and Classification: MIL-S-18411, CLASS I MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 1.313 INCHES NOMINAL IN; Outside Diameter: 1.745 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN. 7 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.