This is the stainless steel screw that used most in the Seitech® dolly. If you are replacing a 3" machine screw with an inset nylock nut then this is the item. Phillips Head screw with Pan Head 3" long Does not include the nylock nut which is available from us as well. Availability: Usually ships the next business day. A554$0.79 Stainless Steel Nylock Nut for the Seitech® DollyThese are the stainless steel inset nut to work with the recessed nut cavity on the Seitech® Dolly fittings. Availability: Usually ships the next business day. A230$0.35 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