Profile: Pressed Parts Co., Ltd. is a manufacturer of channel nuts for cable support systems. We manufacture stainless steel, hot-dip galvanized, studded and anti-vibration nuts. Some of our products are mild steel zinc-plated nuts, mild steel hot-dip galvanized, anti-vibration threadlock nut, topnut and studnut. One benefit of our topnut is that it's spring can be used as an applicator. It allows no spragging on slotted channel, unlike conventional spring nut.