1/4" X 2" NF Fine thread TPI 28 Grade 5 Stainless Steel Bolts Lot of 10 USA MADE. Very high grade strength Mil-Spec grade eners made from 630 stainless steel. COMPLETE SPECS: MRC Parameter Characteristics AAJD Thread Class 3A AAJF Thread Direction Right-hand AASA Thread Length 0.740 inches minimum and 0.820 inches maximum AASB ener Length 1.990 inches minimum and 2.010 inches maximum AASK Head Style Hexagon AASU Head Height 0.156 inches nominal AATB Width Between Flats 0.430 inches minimum and 0.439 inches maximum AHYM Nominal Thread Diameter 0.250 inches ANEE Grip Length 1.190 inches minimum and 1.250 inches maximum CBBL Features Provided Finished head CMLP Thread Quantity PER Inch 28 CQBC Minimum Tensile Strength 140000 pounds per square inch CQFM Hardness Rating 32.0 rockwell C minimum overall and 38.0 rockwell C maximum overall CQHQ Minimum Yield Strength 120000 pounds per square inch CSYM Surface Finish 32.0 microinches bearing surface of head CSYM Surface Finish 32.0 microinches grip CSYM Surface Finish 32.0 microinches threads MATT Material Steel comp 630 overall Great buy Act before all gone Look forward to doing business with you very soon L2A11 10326