The Coupling Half,shaft, cataloged under National Stock Number 3010-01-048-0490, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Cooper Machinery Services Llc. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-048-0490 |
| Primary Part Number | GN-31-3B |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Cooper Machinery Services Llc |
| Status | ACTIVE |
| Bore Length | 0.7500 INCHES NOMINAL IN |
| Body Style | FLEXIBLE KEYWAY INSERT TYPE, THROUGH BORE |
| Bore Shape | STRAIGHT |
| Bore Diameter | 0.5000 INCHES NOMINAL 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 |
|---|---|
| GN-31-3B PRIMARY | Cooper Machinery Services Llc (USA) |
| Reference | Meaning |
|---|---|
| GN-31-3B | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 3010-01-048-0490 is a Coupling Half,shaft, manufactured by Cooper Machinery Services Llc, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-048-0490 has 1 manufacturer part number on file: GN-31-3B (Cooper Machinery Services Llc).
Key specifications for GN-31-3B: Bore Length: 0.7500 INCHES NOMINAL IN; Body Style: FLEXIBLE KEYWAY INSERT TYPE, THROUGH BORE; Overall Length: 1.062 INCHES NOMINAL IN; Bore Shape: STRAIGHT. 5 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.