Product name: ANSI B18.2.1UNF Fine Thread Hexagon Head Bolts(fine tooth American standard 10 outer hex bolt, 8 American standard fine tooth screw)

Executive standard: ANSI/ASME B18.2.1-UNF thread

Product Overview: American-made outer hexagonal bolts we are also known as American-made screws, American standard bolts, bolts are according to the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME) jointly developed for the European and American markets to use one of the standards of fasteners, American standard bolts with ANSI/ASME B18.2.1-UNF Fine Thread Compared to UNC coarse thread bolts, the UNF thread, or United Fine Thread, is known for its smaller pitch and higher precision. UNF threads have a smaller pitch, i.e. more threads per inch of length. This design allows the UNF thread to provide better sealing and higher accuracy when connected. In the need for high-precision connections, such as automotive, aerospace, shipbuilding and other heavy industry, UNF thread is often preferred. In these areas, the stability and safety of the connection are crucial, and the high precision and excellent wear resistance of UNF threads meet these requirements.

Material: Carbon steel (Q195, 1008, 10B21, 35K, 45K), alloy steel (10B33, 40Cr, SCM435)

Product grade: Grade 2, Class 5, Grade 8, Grade 10

Product surface: black, blue and white zinc, color zinc, black zinc, zinc-nickel alloy, hot galvanizing, hot zincing, Jumet, Dacromet, electrophoresis, Teflon, baking paint, etc

Product diameter: # 110-32, / 12 # 32, 1/4 to 28, 24, 24, 3/8-5/16-7/16-20, 1/2-20, 18 18, 3/4, 5/8-9/16-7/8-16, 14, 1-1-1/8 - "" - 8, 12, 1-1/4-12, 12, 1-1-1/2-5/8 - 12, 1-3/4-12, "" 2-12-12, 3, 2-1/2" "12 1/2-12, 3 -, 4 -" "- 12

Product length: 1/4 inch -40 inch length is available and customized

• Product size

Size unit : inch