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Hex Bolts
Hex Bolts RAYCHIN is a manufacturer and worldwide supplier of standard & custom fasteners（Hex Bolts） including those manufactured from the following materials: Hastelloy® C-276, Hastelloy® C-22, Hastelloy® B-2, Hastelloy® G-30, Monel® 400, Monel® K-500, Inconel® 600, Inconel® 625, Inconel® 718, Incoloy® A-286, Titanium Grade 2, Titanium Grade 5, Titanium Grade 7, Nickel 200, Nickel 200, Aluminum, Molybdenum, Nimonic, Nitronic, Tantalum, Tungsten, Waspaloy, Zirconium, Duplex S31803, Duplex S32205 and Super Duplex S32750, etc.
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MP35N Hex Cap Screws
MP35N Hex Head Cap Screws MP35N hex head cap screws are known for their extraordinary strength and are the strongest screws we offer at RAYCHIN. MP35N screws owe their extraordinary strength to a unique alloy combination of nickel, cobalt, chrome and molybdenum and have ultimate tensile strengths that range from 227 ksi to 294 ksi (with age hardening). Beyond the strength of MP35N screws, they are also exhibit good corrosion resistance and can resist most mineral acids, hydrogen sulfide, seawater and salt spray environments. MP35N hex head cap screws are also resistant to high temperature oxidation and could operate in environments up to 800°F and still maintain much of its strength. Applications where MP35N screws are often found are: aerospace, defense, marine, chemical processing, oil and gas and medical.
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Monel Hex Cap Screws
Monel® hex head cap screws, like Monel 400 and K500, are made from a nickel-copper alloy and exhibit high strength, toughness and good corrosion resistance over a wide temperature range. An outstanding characteristic of Monel screws is that they offer exceptional resistance to hydrofluoric acid, a particularly tough acid to deal with, in all concentrations up to the boiling point. For hydrofluoric acid applications Monel hex head cap screws are perhaps the most resistant of all commonly used specialty alloys.
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MP159 Hex Cap Screws
MP159 Hex Head Cap Screws As aerospace engineering advances, so must the materials to meet the technological requirements of this industry. Screws made from MP159 have been developed to provide a solution to high temperature, high strength components. MP159 hex head screws offer strength capabilities similar to other Cobalt Alloys (MP35N) but can be used at much higher temperatures - up to 1100°F, compared to MP35N’s usable limit of 800F. In addition, MP159 hex head cap screws can be used beyond 1100°F in short term situations.
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Tantalum Hex Cap Screws
Tantalum hex head cap screws are best known for its unmatched corrosion resistance and chemical inertness. Tantalum screws have a similar corrosion resistance to that of glass, but all of the typical mechanical and electrical properties of a metal. Tantalum screws are also extremely stable at high temperatures, since tantalum has a melting point around 3000°C. High temperature applications require vaccum or inert gas since tantalum may embrittle when used in oxygen rich environments above 250°C. Tantalum hex head cap screws are also one of the most bio-compatible metals available and is also radio-opaque due to its high density (16.68 g/cm3). All tantalum hex head cap screws are available in commercially pure tantalum and tantalum 2.5% tungsten (Ta-2.5%W).
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Tungsten Hex Cap Screws
Tungsten hex head cap screws are known for their extreme high density; because of this unique attribute, they are often used for balancing rotating parts. Tungsten’s high mass also makes these hex heads radiopaque. This allows tungsten screws to block radiation and show up well on x-rays – even better than lead. Another unique attribute of tungsten is its extrmely high melting point of 3420°C. The high temperature stability of tungsten fasteners make them ideal for some of the hottest vacuum furnace environments. Beyond their high mass and temperature stability, tungsten hex head cap screws are also very corrosion resistant. Tungsten hex head cap screws are usually made from tungsten alloys per ASTM B777, and range from 90% to 97% pure tungsten, alloyed with nickel and copper or nickel and iron.
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Molybdenum Hex Cap Screws
Molybdenum hex head cap screws possess a very high melting point of 2620°C, a low coefficient of thermal expansion and a high level of thermal conductivity. Because molybdenum screws have the ability to withstand extremely high temperatures without changing shape, expanding or softening significantly, they are ideal for high strength / high temperature applications that are shielded from oxygen. Exposing molybdenum hex head cap screws to oxygen above 600°C will cause them to readily oxidize.
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Inconel Hex Cap Screws
Inconel® hex head cap screws, like Inconel 600, 601, 625, 686, 718 & 725 screws, are a family of nickel-chromium-molybdenum alloys used for their high strength at elevated temperatures and good corrosion resistance. Because of its high thermal stability, Inconel can be used in service temperatures ranging from cryogenic to 2200°F (982°C). The high alloy content of Inconel screws enable it to withstand a wide variety of severe corrosive environments. In mild environments, such as the atmosphere, sea water, neutral salts, and alkaline media, there is almost no attack to Inconel hex head cap screws. In more severe corrosive environments the combination of nickel and chromium provides resistance to oxidizing chemicals, whereas the high nickel and molybdenum contents supply resistance to nonoxidizing environments. Because Inconel hex head cap screws offer a good balance of corrosion resistance, temperature stability, toughness and strength they are often a material of choice for chemical processing, aerospace, marine, electronics and oil & gas.
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Incoloy Hex Cap Screws
Not to be confused with Inconel, Incoloy hex head cap screws are made of a nickel alloy which contains iron and a lower content of nickel. Incoloy is essentially a more economical option to Inconel, yet with more restricted corrosion resistance and temperature limits. Typically, Incoloy is an ideal material for long-term exposure in high temperature environments due to its oxidation, carburization and creep resistance. Incoloy is widely used for its resistance to seawater, brine, sour gas and high chloride environments at elevated temperatures, which make it a popular choice in the oil and gas and power industries. The most commonly used grades of Incoloy screws are Incoloy 800, 800H, 800HT; Incoloy 825; and Incoloy 925.
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