Company Introduction

Company Introduction

Mcneil Instruments is a trusted name in the global steel and metal industry, delivering premium-quality products and customized solutions to meet diverse industrial needs. With a strong presence in the Kuwait and across international markets, we specialize in manufacturing and supplying stainless steel pipes, tubes, flanges, fasteners, and other high-performance metal products.

Our commitment to quality, innovation, and customer satisfaction sets us apart. Backed by years of industry expertise, we adhere to international standards and ensure precision engineering in every product we deliver. At Mcneil Instruments, we aim to build long-lasting relationships with clients by providing reliable, durable, and cost-effective solutions for industries such as oil & gas, construction, marine, and petrochemicals.

K Lock Nut

What is a K Lock Nut?

A K Lock Nut, also known as a K-nut or all-metal lock nut, is a type of prevailing torque lock nut designed to resist loosening under vibration or dynamic loads. It features a unique all-metal design with deformed threads or a conical shape at the top, creating frictional resistance when threaded onto a bolt or stud. Unlike nylon lock nuts, K lock nuts do not use polymer inserts, making them suitable for high-temperature applications.

Key Features of a K Lock Nut:

  • All-Metal Construction: No nylon inserts, ensuring resistance to high temperatures and chemicals.
  • Prevailing Torque Design: Deformed top threads provide a locking action, preventing loosening from vibration.
  • High Strength: Made from durable materials like stainless steel, carbon steel, or alloy steel.
  • Reusable: Can be reused multiple times without losing locking capability.
  • Corrosion Resistant Options: Available with protective coatings or in stainless steel for harsh environments.
  • Compact Size: Slim profile makes them ideal for applications with space constraints.

Common Uses of a K Lock Nut:

  • Automotive and aerospace industries for vibration-prone assemblies.
  • Heavy machinery and equipment where high strength and durability are needed.
  • High-temperature applications where nylon insert lock nuts are unsuitable.
  • Construction, railway, and marine applications requiring secure fastening.
  • Industrial equipment and metal-to-metal connections.
K Lock Nuts Specifications

K Lock Nuts Specifications

Specification Details
K Lock Nuts Standard EU, IFI, CSN, Italian, ASME, British BS, Indian IS, ISO, DIN, Polish PN, SAE
K Lock Nuts Sizes M4 to M100
K Lock Nuts Length 1/2″ to 2″ [Standard lengths or custom lengths as per requirement.]
Thread Types Metric (M) and Unified National Thread (UNC/UNF)
K Lock Nuts Materials High Tensile, Stainless Steel, Inconel Fasteners, Incoloy Fasteners, Hastelloy Fasteners, Monel Fasteners, Silicon Bronze, Phospher Bronze, Aluminium Bronze, Nickel, Brass, Copper, Copper Nickel, Nitronic, Nimonic, ASME, ASTM
K Lock Nuts Coating PTFE Coated K Lock Nuts, Hot Dip galvanized K Lock Nuts, Yellow Zinc Plated K Lock Nuts, Blue Zinc Plated K Lock Nuts, Black Zinc Plated K Lock Nuts, Zinc Cobalt Plated K Lock Nuts, Aluminium Zinc Flake Coated K Lock Nuts, Black Phosphate K Lock Nuts, Zinc Plated K Lock Nuts, Nickel Plated K Lock Nuts
High Tensile Grades 12.9 K Lock Nuts, 14.9 K Lock Nuts
K Lock Nuts Forming Hot Forged K Lock Nuts & Cold Forged K Lock Nuts
K Lock Nuts Materials & Grades

K Lock Nuts Materials & Grades

Materials Grades
Stainless Steel ASTM / ASME SA 312 GR. TP 304, 304L, 304H, 309S, 309H, 310S, 310H, 316, 316TI, 316H, 316LN, 317, 317L, 321, 321H, 347, 347H, 904L
High Tensile 8.8, 10.9, 12.9, 14.9
Duplex Steel UNS NO S31803, S32205, S32550, S32750, S32760
Alloys Steel ASTM / ASME A/SA 193 / 194 – B6, B7 / B7M, B16, 2, 2HM, 2H, GR 6
Nickel Alloys Nickel Alloys 200, Nickel Alloys 201
Hastelloy Hastelloy C-22, C-276, C-2000, C-4, X, B, N, G
Inconel Inconel 600, 601, 625, 625LCF, 686, 718, 800, 825, X-750, 690, 602, 617, 925, A-289, AL-6XN, AL-904L
Most Selling Types Of Nuts

Most Selling Types Of Nuts

Hex Coupling Nuts Hex Coupling Nuts Hex Flange Nuts Hex Flange Nuts Hex Jam Nuts Hex Jam Nuts Hex Nuts Hex Nuts K Lock Nuts K Lock Nuts Nylock Jam Nuts Nylock Jam Nuts Nylock Nuts Nylock Nuts Slotted Nuts Slotted Nuts Square Thin Nuts Square Thin Nuts T Slot Nuts T Slot Nuts Weld Square Nuts Weld Square Nuts Wing Nuts Wing Nuts Lifting Eye Nuts Lifting Eye Nuts Heavy Hex Nuts Heavy Hex Nuts Hex Weld Nuts Hex Weld Nuts Hex Cap Nuts Hex Cap Nuts 12 Point Flange Nuts 12 Point Flange Nuts All Metal Lock Nuts All Metal Lock Nuts 2 Way Lock Nuts 2 Way Lock Nuts Acorn Nuts Acorn Nuts
Applications & Uses of K Lock Nuts

Applications & Uses of K Lock Nut

Agriculture Industry

K Lock Nuts in Agriculture Industry

Automobile

K Lock Nuts in Automobile & Transportation

Oil and Gas

K Lock Nuts in Oil and Gas Industry

Plumbing

K Lock Nuts in Plumbing

Water Supply

K Lock Nuts in Water Supply Systems

Chemical Refining

K Lock Nuts in Chemical Refining

Building

K Lock Nuts in Building & Construction

Power

K Lock Nuts in Power Generation

Military

K Lock Nuts in Military

Marine

K Lock Nuts in Marine

K Lock Nuts Export Countries

K Lock Nut Manufacturer, Supplier, Exporter in Countries

Country Country Country Country
K Lock Nuts exporters in Kuwait K Lock Nuts exporters in India K Lock Nuts exporters in Oman K Lock Nuts exporters in Iran
K Lock Nuts exporters in Qatar K Lock Nuts exporters in China K Lock Nuts exporters in UAE K Lock Nuts exporters in Africa
K Lock Nuts exporters in Turkey K Lock Nuts exporters in Mexico K Lock Nuts exporters in Canada K Lock Nuts exporters in Malaysia
K Lock Nuts exporters in Saudi Arabia K Lock Nuts exporters in Brazil K Lock Nuts exporters in USA K Lock Nuts exporters in Sri Lanka
K Lock Nuts exporters in Australia K Lock Nuts exporters in Nigeria K Lock Nuts exporters in 85+ countries
Hex Bolts Export Countries

Manufacturer & Exporter of Hex Bolts in the Following Countries

Country Country Country Country Country
Saudi Arabia Kazakhstan Zimbabwe Netherlands India
Afghanistan Belgium UAE Israel Europe
New Zealand Mexico Canada Venezuela United Kingdom
United States South Africa Malaysia Poland Germany
Singapore Sri Lanka Australia Brazil Ireland