Flange Bolts Basic Material Steel Material Grade Alloy Steel Fastener Finish Plain Dia/Thread Size 7/8 In.-9 Fastener Length 2 1/2 in Fastener Thread Direction Right Hand Fastener Thread Type UNC (Coarse) Fastener Thread Style Partially Threaded Fastener Industry Standards ASTM A574 IFI-115 Thread Length 1 1/4 in Head Height 7/8 in Head Width 7/8 in Flange Dia 1 5/16 in Proof Load 140 000 psi Tensile Strength 170 000 psi Rockwell Hardness HRC37 Package Quantity 5