This comprehensive assortment kit includes nine different sizes of acorn hex cap nuts-#6-32 #8-32 #10-24 #10-32 1/4"-20 5/16"-18 3/8"-16 7/16"-14 1/2"-13 , ensuring compatibility with a wide variety of screws and bolts The SAE Cap nuts assortments kit contain the following sizes and quantity:#6-32 UNC---25PCS;#8-32 UNC---20PCS;#10-24 UNC---15PCS#10-32 UNF---15PCS;1/4"-20 UNC---15PCS);5/16"-18 UNC---10PCS;3/8"-16 UNC---5PCS;7/16"-14 UNC---5PCS;1/2"-13 UNC---5PCS,Total 115 pieces The SAE acorn cap nuts in this assortment kit are made of 304 stainless steel;these fasteners are resistant to corrosion and rust, ensuring long-lasting performance and reliability in both indoor and outdoor environments The sturdy construction of the SAE cap nuts ensures durability and reliability, providing a secure fastening solution for various projects and applications Whether you're working on a home improvement project, automotive repair, or industrial machinery, this assortment kit of acorn hex cap nuts is a must-have for your toolbox, providing the fastening solution for various screws and bolts