Steel Fasteners

Alloy 20 Stud Bolts are externally threaded fasteners without a head, used with 2 nuts on either side, substituting a usual “bolt & nut” assembly. Stud bolts are prominently used in flange connections. Depending upon their design and threading patterns, there are different types of stud bolts as below.

Alloy 20 Fully Threaded Studs, also known as Continuous Threaded Studs or All Thread Studs, are headless fasteners, threaded continuously along the entire length of the stud. Fully threaded studs are usually fastened with two nuts, and are designed for use in applications that entail high tension.

Alloy 20 A nylon insert lock nut is hex-shaped, internally threaded with a nylon insert or collar. The nylon material prevents loosening from vibration by increasing friction between the nylon and the screw thread. The insert deforms elastically over the threads of the screw, but threads are not cut into the nylon. This lock nut style is also referred to as a nyloc or nylock nut, polymer insert lock nut, or elastic stop nut.

904L stainless steel bolts are non stabilised austenitic stainless steel bolts manufactured from alloy containing chromium, nickel, molybdenum and nitrogen with restricted carbon content. Stainless Steel 904L bolts are used for low temperature service and highly corrosive environments

904L washers are made of a non-stabilized low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid. It is also highly resistant to chloride attack ¨C both pitting / crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. Due to its intrinsic anti-corrosive properties, 904L can be made into bolts, nuts, washers, studs, socket head cap screws, as well as a wide variety of other fasteners.

904L Lock Washersalso has a high resistance to pitting in chloride solutions, a high resistance to both crevice and stress corrosion cracking.

Stainless Steel Din 1.4539 Nuts is a non-stabilized austenitic stainless steel with low carbon content, which is also resistant to stress corrosion cracking and crevice corrosion. The addition of copper to Stainless Steel 904L Hex Nuts gives it corrosion resistant properties superior to the conventional chrome nickel stainless steels, in particular to sulphuric, phosphoric and acetic acids.

904L hex nuts which has maximum service temperature of 450 degree ¡æ . Common applications take advantage of corrosion resistance of these Alloy 904L nuts, where these include acid processing plants, equipment for cooling seawater, plup and paper operation, oil refining, and environmental equipment.

ASME SA 479 Duplex Steel UNS S32205 Hex Bolts are commonly used in chemical processing, transportation and storage – pressure vessels, tanks, piping and heat exchangers. ASTM A479 Duplex Stainless Steel 1.4462 Bolts have excellent resistance to stress corrosion cracking, as well as excellent resistance to localized corrosion, including intergranular, pitting, and crevice corrosion.

The microstructure and composition of the duplex 2205 alloy provides corrosion resistance superior to Type 316 or 317 in many environments, and its minimum yield strength is more than double that of conventional austenitic stainless steels.

254 SMO bolts are made from (UNS S31254) austenitic stainless steel which is very resistant to pitting and crevice corrosion due to its high molybdenum content. This metal is designed for use in halide-containing environments, such as seawater.

UNS S31803 Bolt is a threaded fastener with external threads. Generally, like screws, alloy S31803 bolts tend to use a variety of head designs.

Stainless Steel 316L fasteners are made of low carbon austenitic stainless steel. The material is carbon, manganese, silicon, phosphorus, sulfur, 18% chromium, 2% molybdenum, 10% nickel and nitrogen. There are different types of fasteners such as SS UNS S31600 square bolts, hex bolts, screws, nuts and washers.

Duplex Stainless Steel UNS S31803 Hex Head Bolts Hex head and threaded bodies are available.

317L stainless steel was developed as an upgrade to 316L stainless steel with increased nickel and molybdenum content.

Stainless steel grade UNS S31803 is highly resistant to intergranular corrosion due to its low carbon content, which prevents carbide precipitation at grain boundaries.

317L stainless steel fasteners are used in applications utilizing reclaimed water, such as power generation and pulp mill condensers. Other common uses are in the food and beverage industry.

ASTM A1082 specification alloy S31803 fasteners have higher pitting and crevice corrosion than stainless steel alloy 316. Due to its higher corrosion resistance, alloy grade UNS S31803 is able to exhibit better fatigue strength than other commonly used austenitic stainless steel grades in environments containing corrosive media.

904L fasteners come in different types such as bolts, studs, nuts, washers, socket head caps, screws, clamps and more.

The hex head design of the Monel bolt also allows the wrench to easily grasp it, improving the tightening and loosening experience. Monel k500 ASTM material provides advanced quality corrosion protection from hydrofluoric acid, salts, alkalinity and more. Monel NiCu k500 hex bolts are also resistant to seawater and steam, so they are a solid choice for marine applications.

Stainless steel Din 1.4539 fasteners are the basic identification of stainless steel 904L fasteners, which add a large amount of selenium and copper to a solution of phosphorus to improve resistance performance.

Monel K500 fasteners also have some excellent seawater resistance for marine applications. Monel fasteners also have some high-strength metals that have good toughness at high temperatures.

Super Duplex 2507 bolts (EN 1.4410 ) are made of stainless steel alloy containing 25% chromium, 4% molybdenum and 7% nickel.

One of the most widely used general purpose grades of hardenable Inconel alloys, Inconel 718 contains chromium-nickel with minor additions of aluminum and titanium.

Fasteners have excellent resistance to pitting and crevice cracking. In addition, we offer fasteners with excellent resistance to water corrosion, general corrosion and chloride stress corrosion cracking.

Inconel 600 bolts are optimized for the harshest service conditions in manufacturing.

Inconel 718 Bolts exhibit extremely high yield, tensile and creep rupture properties at temperatures up to 1300¡ãF.

The reason ASTM B637 UNS N07718 bolts are ideally chosen for the manufacture of turbine engines. Since a turbine engine operates on basic thermodynamic principles, the efficiency of a turbine engine increases as the turbine inlet temperature increases.

Since Inconel uses nickel as its primary alloying agent, the use of Inconel 718 fasteners at elevated temperatures has no negative effect on the application or the equipment being used.

Increased temperatures have prompted many of our customers to use superalloy Inconel 718 forged rings. Since Inconel uses nickel as its primary alloying agent, the use of Inconel 718 fasteners at elevated temperatures has no negative effect on the application or the equipment being used.