This Hex Head Machine screw fits into the T bracket on the dolly. It is held into place with Wing Nuts. Availability: Usually ships the next business day. A552$0.79 Stainless Steel Wing Nut for Hex nuts at the T bracket on the axle of the Seitech@ DollyUsed with the hex head machine screw for the T bracket on the Axle cross bar of the Seitech® Dolly. These little wing nuts have a habit of going missing. It is always good to have spares. Availability: Usually ships the next business day. A321$0.59 Due to the wide variety of the size and weight of our items we will charge the actual cost of shipping in a separate charge on all orders. Please email us for a shipping cost estimate. Shipments outside the USA may have add on fees and duties by your own government. Sailing can be green! See our recycle your old sail offer Send us email