Shoulder bolt also called Hexagon socket head shoulder screw, Its head is hexagonal and cylindrical. There are stainless steel and iron according to the material. There are stainless steel SUS202 hexagon socket head cap screws in stainless steel. There are stainless steel SUS304 hexagon socket head cap screws and stainless steel SUS316 hexagon socket head cap screws. According to the strength grade of hexagon socket head screws,Grade 8.8-12.9 hexagon socket head cap screws are called high strength and high grade hexagon socket bolts.
Shoulder bolts, or shoulder screws, have a long, unthreaded, cylindrical shoulder that allows for the rotation of attached parts like pulleys, gears, moving parts of engines and mechanical assemblies, and rolling wheels. These screws are also used to attach stripper plates. The socket head enables high torque fastening with limited clearance.
HAIYAN offers the largest line of knurled head and precision shoulder screws available, including 18-8 (Type 303) and 316 Stainless, 17-4PH, Titanium, Monel, Brass and Aluminum. Whether screws are big or small, stock or special, products are made to our customers quality requirements.