Hex bolts made of ASTM A453 Stainless Steel GR 660 CLASS D have a seamless finish, a sturdy body, are lightweight, and other great qualities to offer. We provide ASTM A453 GR 660 CLASS D Heavy Hex Bolts of the highest quality by staying abreast of market trends. Furthermore, we are a favored Distributor and Supplier of this ASTM A453 GR 660 CLASS D Hex Cap Screws selection. We are able to provide our customers with an excellent selection of ASTM A453 GR 660 CLASS D Hex Screws because of the presence of our knowledgeable team members. The socket cap screws in question, ASTM A453 GR 660 CLASS D, have good oxidation resistance in intermittent usage up to 870° C and in continuous service up to 925° C. The benefit of ASTM A453 GR 660 CLASS D Machine Screws is that they combine the positive characteristics of an austenitic alloy with those of a ferritic alloy (high strength and resistance to stress corrosion cracking) (ease of fabrication and corrosion resistance).
Other outstanding qualities of ASTM A453 GR 660 CLASS D Square Bolts are their resistance to corrosion, high performance, low maintenance requirements, and more. The ASTM A453 GR 660 CLASS D Round Bolts that we offer are well renowned in the market for their superior quality. Different industries use these ASTM A453 GR 660 CLASS D Allen Cap Screws for varied applications. These can also be modified based on the requirements of the client.
Specification for ASTM A453 Grade 660 Class D
for use in high temperature service for bolting components such as Stud bolts, screws, nuts, hex bolts, and various other fasteners for pressure vessel and valve flanges, respectively, providing a yield strength of 95 ksi 655 MPa. As long as the relevant heat treatment cycles are matched during production in the single age hardened condition, A453 Grade 660 Class D is equivalent to Class A or Class B. The A453 Grade 660 Cl D Studs and Nuts can withstand an impact of at least 70 joules at -196 degrees Celsius. In addition to wire rods, round bars, shafts, castings, forgings, threaded bars, threaded rods, wires, tubings, sheets, and plates, ASTM A453 Grade 660 Class D is also made in numerous other shapes, including hex bars, rivets, and springs. Due to the high yield of ASTM A453 Grade 660 Cl. D, a stress rupture test is not necessary. The maximum hardness of A453 Gr. 660 Class D Bolting cannot exceed 35HRC without NACE certification. Class D Fasteners are approved for use in accordance with API 20F Specification under the BSL-2 and BSL-3 qualification standards.
