Profile: W. M. Heitgras Co. specializes in fasteners and related products. We are ISO 9002 certified. Our products include studs, stud bolts, nuts and custom products. Our services includes stud bolt cutting, bolt bin, custom threading, bar stocking and alloy stud bolt manufacturing. We also sell ASTM A-193 studs with ASTM A194 2-H hvy hex nuts, including diameters ranging from 1/2" to 1-3/4" and 3/8" to 4" ASTM A-193 studs & ASTM A-194 nuts.