<b>M10-1.50 x 45mm Hex Flange Bolt, Non Serrated, Grade 10.9, Zinc Yellow</b> <br><br> Sold Here in a package of 5. <br> Non Serrated Flange Bolts, also called Frame Bolts, are used heavily in the automotive industry. The large washer face provides a wide bearing area, which keeps fastener tight longer than with a normal hex bolt and minimizes damage to object it is fastened to.