📦 (Pack of 4 PCs) 3/4"-16 UNF HEX NUT 🔩 3/4"-16 means major OD = 3/4" with pitch = 1/16 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