For automated, high-speed assemblies, the Stanley Avdel Hemlok is the perfect solution.  It’s designed with an easy-to-use lead-in point, which means fast, reliable installation. When pulled it has a  broad, blind side bulb, which makes it a good choice for use within thin materials, and within oversized, misaligned, or slotted holes. We stock Hemlok in steel. THe unique bulb ensures it does not pull through thin or brittle material. See autobulb for stainless steel variant.