📦 (Pack of 4 PCs) 1"-12 UNF HEX NUT 🔩 1"-12 means major OD = 1" with pitch = 1/12 inch while UNF stands for Unified National Fine Threads ⚛️ Made of Stainless steel 304 📚 Unified Screw Threads has three classes UNC, UNF and UNEF ✨ UNC = Unified National Coarse Thread / UNF = Unified National Fine Threads / UNEF = Unified National Extra Fine Threads