The Coupling Half,shaft, cataloged under National Stock Number 3010-01-545-4556, is classified within Federal Supply Class 3010 (Torque Converters and Speed Changers) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 9 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3010-01-545-4556 |
| Primary Part Number | 4081840 |
| Item Name | Coupling Half,shaft |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Spline Type | INVOLUTE |
| Body Style | MULTIPLE POSITIONING HOLES, RECESSED FACE |
| Material Document and Classification | AMS 6305 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6304 ASSN STD 2ND MATERIAL RESPONSE |
| Spline Major Diameter | 1.245 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Outside Diameter | 4.240 INCHES MINIMUM AND 4.260 INCHES MAXIMUM IN |
| Bore Shape | SPLINED |
| Spline Pressure Angle in Deg | 30.000 |
| Spline Quantity | 24 |
| Material | STEEL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4081840 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 3010-01-545-4556 is a Coupling Half,shaft, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-545-4556 has 1 manufacturer part number on file: 4081840 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 4081840: Spline Type: INVOLUTE; Body Style: MULTIPLE POSITIONING HOLES, RECESSED FACE; Material Document and Classification: AMS 6305 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6304 ASSN STD 2ND MATERIAL RESPONSE; Overall Length: 4.450 INCHES MINIMUM AND 4.470 INCHES MAXIMUM IN. 9 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.
NSN 3010-01-545-4556 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.