SS 321 Machine Screw Manufacturer in Mumbai, India

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Niko Steel Engg LLP is known as a leading manufacturer of screws including Stainless Steel 321 Machine Screw. We fabricate these screws by international standards as well as the national guidelines. A machine screw is a type of screw that does not have pointed tips as other screws have. Moreover, the diameter of the screw is the same throughout the length of the machine screws. Therefore, they look similar to bolts and also they are secured with the help of nuts.

However, in some cases, they are used without nuts and drive directly into the tapped holes. The common purpose of a machine screw is to fasten different components of machines. Even the appliances parts are fastened using the variety of machine screws.

Machine screws vary based on head types. Roundhead, flat head, hex head, oval head, pan head, and other head types are available. There are almost eighteen types of Stainless Steel S32100 Machine Screw. Some more types include flat undercut of 100 degrees, binding undercut, fillister, 100 degrees flat, oval undercut, truss, serrated, round washer Phillips, and more. Machine screws get their characteristics from the material being used to manufacture them. A common among all is Stainless Steel 321 which is basic austenitic steel with titanium additions. They are commonly used because of insensitiveness towards intergranular corrosion. When the steel is heated within the range of 425-850degree C carbide precipitation is seen which is responsible for intergranular corrosion. But, these screws don’t get affected by the corrosion because of its insensitiveness towards it. Therefore, they are a great choice for using the screws up to 900 degrees C temperature.

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Moreover, at this temperature, the screws exhibit high strength and scaling resistance. It also shows the phase stability and resists the corrosion caused in aqueous solutions. They do not lose strength even at high temperatures because of high carbon content. However, they are affected by crevice and pitting corrosion but shows resistant in potable water at ambient temperatures. It can be used at 60 degrees C and water level up to 150mg/L where the screws don’t undergo corrosion. Moreover, it can serve without getting affected by the oxygen up to 900 degrees C and 925 degrees C.

Stainless Steel 321 Machine Screws Types
Specification of SS 321 Machine Screw
Standard : ASTM A /SA 193 / 194
Dimension : ASTM,DIN, BS,GB, IS and all International Standards
Length : 3 mm to 100 mm
Machine Screw Size : M1.6 to M64 | Custom Sizes
Test pressure : 2.4 to 3 Mpa
Heat Treatment : Annealing, Stress Relieving, Case Hardening, Quenching and Tempering.
Type : Pan Head Screw, CSK Head Screw, Cheese Head/Round Head Slotted Screw, CSK Philips Screw etc.
Other Properties of SS 321 Machine Screw

If you would like to inquire or place an order.
Call :+91 22 66362225/66662225/67432225

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Other Stainless Steel 321 Machine Screw Types

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Quality Assurance of SS 321 Machine Screws

Stainless Steel 321 Machine Screws are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.