Hex Socket Flange Head Screw, 304 Stainless Steel A2-70 Knurled Flange Bolt DIN251

Hex Socket Flange Head Screw, 304 Stainless Steel A2-70 Knurled Flange Bolt DIN251. Made of A2 304 stainless steel with passivation treatment, outstanding rust and corrosion resistance. Button round head, Torx security drive with center pin, anti-theft & tamper-proof. Grade A precision metric thread, complete sizes M2~M8, sample & bulk orders supported. Requires special security torx bits, ideal for public equipment and outdoor enclosures. Smooth surface, no sharp edges, neat appearance after installation.