ARP 300 stainless steel hex flange and 12-point flange bolts are nominally rated at 170,000 psi tensile strength to provide a substantial extra margin of safety over Grade 8 hardware.

12-Point Flange Bolts Stainless Steel ARP 12-Point USS (Coarse Thread) ARP 12-Point SAE (Fine Thread) ARP 12-Point Metric (Coarse Thread) ARP 12-Point Metric (Fine Thread)

Hex Flange Bolts Stainless Steel ARP Hex Flange USS (Coarse Thread) ARP Hex Flange SAE (Fine Thread) ARP Metric Hex Flange (CoarseThread) ARP Metric Hex Flange (Fine Thread)