Home / Recreation / Treadmill Screw S3TI-13 Treadmill Screw S3TI-13Price Not Available Price may not be up-to-date. Out of Stock View Product Part Number: S3TI-13 Brand: BH NORTH AMERICA CORP Seller: Sears PartsDirect Category: Recreation Possible Matches$2.99Allen Screw M8-1.25x19mm S5TiB-13 Works W BH Fitness S3Ti S3TiB S5T... Description This screw (part number S3TI-13) is for treadmills. Follow appropriate safety practices when installing screw S3TI-13.