Thread size: M5x8mm; elastic range: 4.018.0N; ball piston stroke: 1.1mm Drive Type: Hex Socket; hex socket width: 2.5mm Package Contents: 10 ball head screws Made of 304 stainless steel, sturdy and durable, can adapt to various indoor and outdoor environments. Ball head screws are mainly used in fixtures and machinery for fixing and positioning. Made of 304 stainless steel, sturdy and durable, can adapt to various indoor and outdoor environments. Head screws spherical are mainly used in fixtures and machinery for fixing and positioning. Color: Steel Features: Material: 304 Stainless Steel. Finish: Polished. Thread Size: M5 x 8 mm. Thread pitch: 0.8mm. Socket Type: Hex Socket. Hex Socket Width: 2.5 mm. Piston ball diameter: 3 mm. Elastic range: 4 to 18 N. Ball piston stroke: 1.1 mm. Contents: 10 ball head screws