1/4-28 x 2 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) 9/16-18 Socket Cap Screws Alloy Pre-drilling recommended near board ends

1 4 28 x 2 1 2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (100) 9 16 18 Socket Cap Screws Alloy Pre drilling recommended near board ends Pre drilling recommended near board ends to prevent splitting Straight shank to 1 2” 1 2” reduced shank for sizes above 1 2” M2 high speed steel Sharp cutting edge to drill in many different materials: Mild Steel Cast Iron Aluminum Wood Extra length flute with continuous cutting edges for drilling deep holes and fast chip removal Reduced shank fits all drill motors with 1 2” chucks Non slip grip prevents the bit from spinning in the chuck 000 psi minimum tensile strength its special features control torque tension characteristics to develop high clamp loads when using properly controlled tightening methods