Bolt and Nut A+ A- Print Email General Information for Bolt and Nut Quality Standard for Bolt and Nut High quality Fasteners and Stud Bolts all made and controlled to the relevant standards such as: ASME, ASTM, BS and DIN/WERKSTOFFE. Sizes for Fasteners and Stud Bolts All Fasteners and Stud Bolts are available available in any size