Threaded Pins and Bushes QPR International manufactures Threaded Spring Pins and Bushes for Trucks: Specifications: Steel SAE8620, EN32B Steel Grade as specified by the Customer Bimetal Bushes Brass and Bronze Bushes Threaded Pins and Bushes Pins and Shafts Brake Parts Oil and Water Pump Parts Rubber-Metal Bushes Fasteners / Other Automobile Components