Hex nuts (also referred to as finished hex nuts) are available in ASTM A563-A and compatible with low carbon steel bolts such as ASTM A307, ASTM F1554 grade 36, SAE grade 2, and AASHTO M183. SAE grade 5 and grade 8 nuts are also available in a finished pattern. Since hot-dip galvanizing typically adds 2.2 to 5 mils of thickness to the threaded portion of a fastener, galvanized hex nuts are tapped oversize to compensate for the corrosion resistant coating on the bolts. ASME hex nut is widely used, mainly in the field of machinery and equipment, construction, automobile, railway and other industries. The mechanical property has grade 2, grade 5, grade 8 for inch series, grade 4, grade 8, grade 10, grade 12 for metric series. Hexagon nuts are used in conjunction with screws, bolts, and screws to connect and tighten parts. ASME ANSI hex nut covers the dimensional requirements of inch series hex nut. The common standard of ASME/ANSI hex nut is ASME B18.2.2. It includes normal hex nut, hex thin nut, hex thick nut and heavy hex nut. The size from 1/4-4″ diameter. DIN standard is DIN934.1: What’s the delivery time? Usually30-60 days. Or according to quantities. 2: How to check the quality? You may check from our free samples or your small trial order. 3: What standard you may reach? Each of our product will reach the standard, we can supply with you the relevant certificates. 4: What kind of product quality your factory offer? Our products with both excellent quality and competitive price. And we offer free sample for your reference. 5: Where is your mainly market? We mainly ship to Asia, Europe, South America, North America, Africa, Middle East, etc.