The Coupling Half,shaft, cataloged under National Stock Number 3010-01-458-3701, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cosmodyne, Llc Dba Cosmodyne Llc. Government technical data includes 6 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. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-458-3701 |
| Primary Part Number | 2603502-21 |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Cosmodyne, Llc Dba Cosmodyne Llc |
| Status | ACTIVE |
| Bore Length | 2.2500 INCHES NOMINAL IN |
| Body Style | FLEXIBLE KEY INSERT TYPE, THROUGH BORE |
| Outside Diameter | 2.0000 INCHES NOMINAL IN |
| Features Provided | KEYWAY |
| Bore Shape | STRAIGHT |
| Bore Diameter | 0.6860 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 |
|---|---|
| 2603502 | Cosmodyne, Llc Dba Cosmodyne Llc (USA) |
| 2603502-21 PRIMARY | Cosmodyne, Llc Dba Cosmodyne Llc (USA) |
NSN 3010-01-458-3701 is a Coupling Half,shaft, manufactured by Cosmodyne, Llc Dba Cosmodyne Llc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-458-3701 has 2 manufacturer part numbers on file: 2603502 (Cosmodyne, Llc Dba Cosmodyne Llc), 2603502-21 (Cosmodyne, Llc Dba Cosmodyne Llc).
2 possible matches (shared part number, not a government interchangeability claim): 3010-01-459-6588, 4820-01-466-2775. Verify interchangeability with system specifications before substitution.
Key specifications for 2603502-21: Bore Length: 2.2500 INCHES NOMINAL IN; Body Style: FLEXIBLE KEY INSERT TYPE, THROUGH BORE; Overall Length: 3.2500 INCHES NOMINAL IN; Outside Diameter: 2.0000 INCHES NOMINAL IN. 6 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.