... Gr.1,Gr.2,Gr.3,Gr.4,Gr.5,6AL4V,Gr.7,Gr.9,Gr.12 ProductHex Socket Head Cap ... 316), B 8 T (SS 321), A 2, A 4Freeun produces custom hexagon socket screws per customers' drawings or samples.Send us ... 540 5/161/4~10"1 1/22-1/2~18"Hex Socket Flat Head Cap Screws (DIN7991=ISO 10462=ASME B18 ... tight nor too loose.2. Best when used for the assembly of simple revolving parts.Size list:Hex Socket Set Screws (DIN913 ...