I'm looking for Nylon 6/6 pellets for installation in a thread. I'm pretty sure they are made to standard sizes but I can't find much info searching the web. I only find fasteners with the inserts already installed. I can contact the manufacturers, but I figured this would be a commonplace item. Also, if anyone has any experience installing them, any idea what size to make the hole relative to the insert for a press fit that so it won't fall out? The needed insert diameter is .141".