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Monel Fasteners

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Monel Fasteners

ARK Stainless Inc. is a leading manufacturer and supplier of high-performance Monel 400/K500 Fasteners, renowned for their exceptional strength, resistance to corrosion, and reliability in challenging environments. These fasteners are designed to provide outstanding durability, even in extreme conditions such as exposure to seawater, sulfuric acid, hydrofluoric acid, and alkalis. Ideal for critical applications across a range of industries, Monel fasteners perform well in both high and low-temperature environments, ensuring long-lasting and dependable results.

We offer a diverse range of Monel fasteners, including Monel 400 and Monel K500, each offering distinct benefits for various applications. Monel 400 is known for its outstanding mechanical properties, such as high tensile strength and hardness, making it suitable for a wide range of industrial uses. On the other hand, Monel K500 provides enhanced tensile strength and yield strength, as well as superior resistance to pitting and crevice corrosion, making it perfect for high-stress and corrosive environments. Our Monel fasteners are manufactured in accordance with international standards, including ASTM B164 / ASME SB164, ensuring top-tier quality and consistent performance.

Table of Contents

Chemical Composition of Monel Fasteners

Grade Ni Fe C Mn Si Cu Al Ti S
400 63.0- 70.00 max 2.50 max 0.3 max 2.00 max 0.50 max Remainder - - 0.024 max
K500 63.0 min 05 - 2 0.25 max 1.5 max 0.5 max 27.0 - 33.0 2.3 - 3.15 0.35 - 0.85 0.010 max

Mechanical Properties of Monel Fasteners

Grade Tensile (ksi) .2% Yield (ksi) Elongation % Hardness (HRb)
400 75 to 90 25 to 50 60 to 35 60 to 80
K500 Psi – 1,60,000 , MPa – 1100 Psi – 1,15,000 , MPa – 790 20 % -

Monel 400/K500 Fasteners

Monel 400/K500 Fasteners are widely used across various industries and engineering sectors, including power generation, gas processing, seawater systems, heat exchangers, chemical processing equipment, pulp and paper industries, pharmaceutical equipment, offshore oil drilling, and more.
To ensure the highest quality, we subject these fasteners to a series of stringent tests before delivery. These include mechanical testing, PMI testing, chemical analysis, flattening tests, micro and macro examinations, and IGC testing, among others. Along with these fasteners, we provide all the necessary documentation and test certificates, assuring our customers of their superior quality and performance.


Monel 400 / K500 Fasteners Equivalent Grades
STANDARD UNS WNR. EN JIS GOST AFNOR BS
Monel 400 N04400 2.4360 NiCu30Fe NW 4400 МНЖМц 28-2,5-1,5 NU-30M NA 13
Monel K500 N05500 2.4375 - - - - -

Specification of Monel 400 / K500 Fasteners
  • Specification: ASTM B164 / ASME SB164
  • Dimension: DIN, ISO, ASTM, JIS, BS, GB, IS and all International Standards
  • Size Range: M3 - M56 | 3/6" to 2" | Custom Sizes
  • Length: 3 mm to 200 mm
  • Types: Nuts, Bolts, Screws, Sockets, Studs, Screw, Hex Set Screw, Socket Screw, Cap Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap Screw, Wing Screw, Washers, Spring Washers, Studs, Anchors, Marine Anchors, Nut, Hexagon Nut, Hex Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Socket Hexagon Head Screw, Anchor Bolt, U-Bolts, J Bolts, Mushroom Head Square Neck Bolts, T-Head Bolts, Wing Screw, Eye Bolt, Foundation Bolts, Structural Bolts.