The Coupling,shaft,rigid, cataloged under National Stock Number 3010-01-275-4752, 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 | 3010-01-275-4752 |
| Primary Part Number | 521738 |
| Item Name | Coupling,shaft,rigid |
| FSC / FSG | 3010 / 30 — Torque Converters and Speed Changers |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Bore Length | 0.7120 INCHES NOMINAL THROUGH BORE IN |
| Bore Length | 0.8150 INCHES NOMINAL BOTH ENDS IN |
| Criticality Code Justification | AGAV |
| Features Provided | BORE COUNTERBORE |
| Bore Shape | STRAIGHT BOTH ENDS |
| Body Material | STEEL |
| Surface Treatment | CHROMIUM |
| Bore Diameter | 0.8820 INCHES NOMINAL SECOND END IN |
| Bore Diameter | 1.3400 INCHES NOMINAL FIRST END IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 521738 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
NSN 3010-01-275-4752 is a Coupling,shaft,rigid, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 3010, Torque Converters and Speed Changers. Status: active.
NSN 3010-01-275-4752 has 1 manufacturer part number on file: 521738 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney).
Key specifications for 521738: Bore Length: 0.7120 INCHES NOMINAL THROUGH BORE IN; Bore Length: 0.8150 INCHES NOMINAL BOTH ENDS IN; Criticality Code Justification: AGAV; Features Provided: BORE COUNTERBORE. 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.
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.