2011 Tensile Strength Tensile Strength of Common Bolts, Cap Screws, and Threaded Rod Size 1/4-20 5/16-18 3/8-16 7/16-14 1/2-13 9/16-12 5/8-11 3/4-10 7/8-9 1-8 1 1/8-7 1 1/4-7 1 3/8-6 1 1/2-6 1 3/4-5 2-4 1/2 1/4-28 5/16-24 3/8-24 7/16-20...
Take the minimum yield in psi of the ASTM grade (see ourStrength Requirements by Grade Chartfor this value), multiplied by the stress area of the specific diameter (see ourThread Pitch Chart). This formula will give you the ultimate yield strength of that size and grade of bolt. Example:W...