PD - 2501 is an aviation torque wrench multiplier with NSN 5120 - 01 - 355 - 1238, specially designed to boost the torque of torque wrenches for aircraft maintenance. It strictly complies with military and aerospace quality control and testing specifications. By providing a stable power ratio, it enables technicians to apply greater torque effortlessly, which is essential for tightening or loosening stubborn fasteners in aircraft key structures. Its material meets the strict standards of the Ships Parts Control Center Activity HX. As a critical aviation maintenance tool, it ensures precise and reliable torque application, reduces operational difficulty, and plays a vital role in safeguarding aircraft assembly accuracy and flight safety for aviation maintenance operations.