1"UNF LOCK HALF-NUT S/C (BRIGHT M/S) is a robust fastening solution built to meet industrial standards. The zinc-plated, self-colour, or A4 stainless steel finish provides superior corrosion resistance, making it perfect for tough environments. Designed for structural, mechanical, and construction applications, this fastener ensures a secure and durable fit. An essential component for engineers, builders, and professional tradespeople requiring reliable fastening solutions.