• At Metallica, we supply the market with top quality carbon steel and marine grade fasteners. We offer exceptional durability and competitive prices when it comes to low carbon, medium carbon or high carbon steel fasteners. Metallica provides the value added services, such as the heat treating, cutting, machining, painting and assembly. Carbon steel fasteners are specified to BS EN ISO 3506. Various kinds sizes of fasteners are available: M2-M100.
  • Carbon Steel Fasteners Available on Sale, by India’s Largest Stockholder and Manufacturer. Metallica makes it easy for you to source top quality carbon steel fasteners at the lowest prices in India. We specialize in providing deliveries to your factory directly from our warehouse or our principal suppliers.
  • Metallica is a supplier of a huge range of chrome plated and carbon steel fasteners in Metric, Metric Fine, UNF, UNC, BA, BSF and BSCY (cycle) threads.
  •  We welcome our customers to purchase high quality carbon steel fasteners in stock at cheap price from our factory. For customized and OEM services, contact us now.
  • The Steel Pipes Factory, Metallica Group is established since 1975 and is known for providing competitive prices, high-quality technical services and on-time delivery. We have more than 15 advanced production lines and advanced testing equipment for quality inspection and quality assurance. The use of advanced technology, scientific management model, and professional technical personnel ensure the excellent quality of each branch. Advanced production equipment, scientific and standardized management, strict quality assurance system and high-quality core team are the core competitiveness of the company.
Carbon Steel Fasteners Manufacturer, Wholesaler, Dealer, Supplier, Stockist and Distributor In India and Abroad
  • As one of the largest manufacturer of Carbon Steel Fastener, we have over 6000 tons in stock

  • Carbon Steel Fasteners Available at around Rs. 200/KG for Sale in India.

  • Our Annual Sales Volume for Carbon Steel Valves is Over 25,000 tons in India and Overseas.

  • Carbon Steel Pipes and Tubes, are Sold with Complete Range of Related Pipe Fittings and Flanges

  • On-Time Delivery with Quality Assurance and Price Guarantee for Carbon Steel Fasteners

  • Email Us on sales@metallicametals.com | Call Us On +918928722715.

Buy High Quality Stainless Steel Fasteners at Best Competitive Price! Stainless Steel Fasteners on Sale! 

Types of Carbon Steel Fasteners

Parts of Carbon Steel Fasteners

  1. Nuts – Used with a bolt and washer to create a joint. It is considered a temporary joint because it can be easily removed.
  2. Bolts – Held on by a nut, typically with a shoulder, bolts have a much higher strength than screws and are used when removing the connection is likely.
  3. Washers – Used typically on the nut side of a nut and bolt assembly to provide the nut with a flat and smooth surface to fasten against. They can also protect the material surface.
  4. Screws – Used to hold materials together and considered permanent, screws hold themselves into the materials they are installed in without a nut.
    Types of Fastener Head

    Types of Fastener Head

  5. Rivets – Considered a permanent install, rivets hold materials together by expanding on one side of the hole resulting in a firm hold.
  6. Anchors – Typically permanent. Most are placed in a hole and somehow expanded to fill the hole and prevent pull-through
  7. Retaining Rings – A ring the is either expanded or compressed and fit into a recess on a shaft. They are commonly used on shocks to hold springs under pressure.
  8. Dowel Pins – A cylindrical metal pin used in machinery to keep pieces in place.
  9. Security Screws – Serve the Same functionality as screws but with unusual head styles that may add extra security to your assembly

Note: There are many kinds of each fastener that can serve different purposes. For example sheet metal screws have sharp cutting threads that will easily cut through soft metals where as a wood screw is used primarily in wood to wood applications.

Stock Range of Carbon Steel Fasteners

Product Carbon Steel Fasteners
Standard DIN, ISO, JIS, GB, IS, BS, ASTM
Length 3 mm to 200mm
Size Range M02 to M33
Form Square, Round, Threading as per Gauge Etc.
Head Drive Phillips, Slotted, Phillips/Slot, Six-Lobe, etc.
Types Carbon Steel Fasteners, Bolts (Eyebolt),  Stud, Nuts (Nylock, Lock), Washer (Star, Plain), Allen Caps, Screws (CSK, Pen Head, Philip, Mushroom, Cheese), Clamp (U, J, L), Grab, Rivet (Pop & Hollo) Etc.
Material Available Stainless Steel, High Tensile, Nickel Alloy, Alloy Steel, Mild Steel, Copper, Brass, Aluminium, Carbon Steel
Nickel Alloy Hastelloy, Cupro Nickel, Nickel, Monel, Inconel, Alloy 20 Etc.
Surface Treatment HOT DIPPED GALVANIZING FASTENERS, PHOSPHATE FASTENERS, TEFLON FASTENERS, PTFE Coated FASTENERS, XYLON FASTENERS, ZINC FASTENERS, CADMIUM FASTENERS
Packing Wooden cases or wooden pallet or as per customers requirement
Delivery Time 25 days after order conformed
Payment By T/T or L/C
Test Certificate Manufacturer Test Certificate as per EN 10204 / 3.1

What is a Fastener?

Fastener Terminology

[Image Source: From web]

A fastener or fastening is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. Welding is an example of creating permanent joints. Steel fasteners are usually made of stainless steel, carbon steel, or alloy steel.

What are the Applications of Carbon Steel Fasteners?

  • Components that are exposed to saltwater, chemicals or other corrosive environments
  • High wear parts
  • Sanitary equipment
  • Components that are exposed to high heat and high stress
  • Components that require superior strength and stability.
  • Fasteners are widely used in various industries, including energy, electronics, electrical appliances, machinery, chemical industry, metallurgy, dies, hydraulic and other industries.

Standards for Carbon Steel Fasteners

The American Society of Mechanical Engineers (ASME) publishes several Standards on fasteners. Some are:

  • B18.3 Socket Cap, Shoulder, Set Screws, and Hex Keys (Inch Series)
  • B18.6.1 Wood Screws (Inch Series)
  • B18.6.2 Slotted Head Cap Screws, Square Head Set Screws, And Slotted Headless Set Screws (Inch Series)
  • B18.6.3 Machine Screws, Tapping Screws, and Metallic Drive Screws (Inch Series)
  • B18.18 Quality Assurance For Fasteners
  • B18.24 Part Identifying Number (PIN) Code System Standard for B18 Fastener Products
Carbon Steel Type Standard Grades Specification
Medium-Temp Pipes A106 A, B, C This specification covers carbon steel pipe for high-temperature service.
Fittings A234 WPA, WPB, WPC This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction.
Flanges A105 This specification covers standards for forged carbon steel piping components, that is, flanges, fittings, Valves, and similar parts, for use in pressure systems at ambient and higher-temperature service conditions.
Valves A216 WCB This specification covers carbon steel castings for Valves, flanges, fittings, or other pressure-containing parts for high-temperature service and of quality suitable for assembly with other castings or wrought-steel parts by fusion welding.
Bolts & Nuts A193 B7 This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
A194 2H Standard specification for nuts in many different material types.
High-Temp Pipes A335 P1, P11, P12, P22, P5, P9 This specification covers seamless ferritic alloy-steel pipe for high-temperature service.
Fittings A234 WP1, WP11, WP12, WP22, WP5, WP9 This specification covers wrought carbon steel and alloy steel fittings of seamless and welded construction.
Flanges A182 F1, F11, F12, F22, F5, F9 This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
Valves A217 WC1, WC6, WC9, C5, C12 This specification covers steel castings, martensitic stainless steel and alloys steel castings for Valves, flanges, fittings, and other pressure-containing parts intended primarily for high-temperature and corrosive service.
Bolts & Nuts A193 B7 This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
A194 2H Standard specification for nuts in many different material types.
Low-Temp Pipes A333 6, 3 This specification covers wall seamless and welded carbon and alloy steel pipe intended for use at low temperatures.
Fittings A420 WPL6, WPL3 Standard specification for piping fittings of wrought carbon steel and alloy steel for low-temperature service.
Flanges A182 F304, F316, F321, F347 This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
Valves A182 F304, F316, F321, F347 This specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and Valves and parts for high-temperature service.
Bolts & Nuts A193 B8 This specification covers alloy and stainless steel bolting material for pressure vessels, Valves, flanges, and fittings for high temperature or high pressure service, or other special purpose applications.
A194 8 Standard specification for nuts in many different material types.

Markings on the head of Carbon Steel Fasteners

  1. A manufacturer marking which simply indicated the company that manufactured the fastener.
  2. The strength class which consists of two numbers separated by a decimal point. Common classes are 4.8, 8.8, 10.9, and 12.9. The number of the left indicates 1% of the tensile strength in MPa, or N/mm2. The number on the right indicates the proportion of the yield strength in relation to the tensile strength.

Manufacturing Process of Carbon Steel Fasteners

There are two basic methods for producing fasteners—machining and cold heading—both of which are applicable to stainless steels.

  1. Machining:- Machining is the oldest method of fastener production, and it is still specified for very large diameters and for small production runs. Machining, however, has a drawback,it disrupts metal grain flow and creates planes of weakness in the critical head-to-shank fillet area. The result is some loss in load-carrying ability and a drastic reduction in fatigue resistance.
  2. Cold Heading:- Cold Heading is a method of forming wire into various shapes by causing it to plastically flow into die and punch cavities without preheating the material. Cold heading has many important advantages in both quality and economy.

There are other operations involved in fastener production, such as head slotting, shank slotting (for thread-cutting screws), head drilling, etc. But the making of and threading the blank are the two major processes.

What are the Features and Advantages of Carbon Steel Fasteners?

  • Light weight
  • Flexibility
  • Toughness
  • Chemically Inert
  • Resistance to Abrasion
  • Smooth surface
  • Environmental stress crack resistance
  • Corrosion resistance
  • Frost & rodent resistance
  • Hygienic safety
  • Easy & quick installation
  • Non-magnetic
  • Easy Availability
  • Inexpensive
  • Carbon Steel Bolts Have an Excellent Life Cycle
  • Better Visual appeal
  • Easier Replacement of Parts
  • In some important cases, some anti-loose measures will be taken to ensure the reliability of the nut locking. The use of lock nut is one of the anti-loose measures. The working principle of the nut is self-locking by the friction between the nut and the bolt.
  •  They are easily disassembled, as opposed to something like riveting or welding, which requires cutting.
  • They can be designed to take tension loads, unlike riveting (by tightening the bolt/nut to develop a preload, you reduce the effects of fatigue due to cyclic loading, which you can’t do with a rivet; plus, rivets can easily pull through a hole when loaded in tension).
  • Welds require heating a metal, which can change the properties in the heat-affected zone, and can also create thermal stresses. Bolts avoid this problem. You’re also not likely to start a fire (welds) or breathe toxic fumes (welds and adhesive joints) when you’re installing a bolt.
  • Bolted joints aren’t particularly sensitive to the condition of the parent material. With welds and adhesive joints, the parent material needs to be clean, free of oils, etc (and obviously, it has to be metal to weld).
  • You can put a bolt in a blind hole (one that doesn’t go all the way through the material); you can’t use a rivet.
  • Bolts are easy. Welding takes a lot of skill and a lot of time, particularly if you’re going to inspect the weld for flaws after it’s completed. But just about everybody has used a wrench.
  • Bolts offer much better joint quality than a screw, mostly because the threads are more tightly controlled.

What are the Disadvantages of Carbon Steel Fastener?

Need to Be Properly Fastened – With carbon steel fasteners you need to make sure that they are properly affixed with spacers or else you run the risk of metal-on-metal corrosion.

Chemical Composition Of Carbon Steel Fasteners

CLASS MATERIAL AND TREATMENT C, % P, max % S, max % B, max% Tempering Temperature [C]
8.8 CARBON STEEL WITH ADDITIVES (E.G. B, MN OR CR) QUENCHED AND TEMPERED 0.15-0.4 0.025 0.025 0.003 425
CARBON STEEL QUENCHED AND TEMPERED 0.25-0.55 0.035 0.025
10.9 CARBON STEEL WITH ADDITIVES (E.G. B, MN OR CR) QUENCHED AND TEMPERED 0.15-0.35 0.025 0.025 0.003 340
CARBON STEEL QUENCHED AND TEMPERED 0.25-0.55 0.025 0.025 0.003 425
CARBON STEEL WITH ADDITIVES (E.G. B, MN OR CR) QUENCHED AND TEMPERED 0.20-0.55 0.025 0.025
ALLOY STEEL QUENCHED AND TEMPERED (G) 0.2-0.55 0.025 0.025
12.9 ALLOY STEEL QUENCHED AND TEMPERED (G) 0.28-0.5 0.025 0.025 0.003 380

Heat Treatment For Carbon Steel Fasteners

The most common heat treatments in manufacturing fasteners are:
1. Annealing
2. Normalizing (Recrystallization)
3. Stress-relieving
4. Hardening
5. Tempering
6. Quenching and tempering
7. Decarburizing
8. Case carburizing
9. Induction hardening

Frequently Used ASTM Grades

Material Pipes Fttg Flg Valves Bolts and Nuts
Carbon Steel A106 Gr A A234 Gr WPA A105 A216 Gr WCB A193 Gr B7
A194 Gr 2H
A106 Gr B A234 Gr WPB A105 A216 Gr WCB
A106 Gr C A234 Gr WPC A105 A216 Gr WCB
Carbon Steel
Alloy
High-Temp
A335 Gr P1 A234 Gr WP1 A182 Gr F1 A217 Gr WC1 A193 Gr B7
A194 Gr 2H
A335 Gr P11 A234 Gr WP11 A182 Gr F11 A217 Gr WC6
A335 Gr P12 A234 Gr WP12 A182 Gr F12 A217 Gr WC6
A335 Gr P22 A234 Gr WP22 A182 Gr F22 A217 Gr WC9
A335 Gr P5 A234 Gr WP5 A182 Gr F5 A217 Gr C5
A335 Gr P9 A234 Gr WP9 A182 Gr F9 A217 Gr C12
Carbon Steel
Alloy
Low-Temp
A333 Gr 6 A420 Gr WPL6 A350 Gr LF2 A352 Gr LCB A320 Gr L7
A194 Gr 7
A333 Gr 3 A420 Gr WPL3 A350 Gr LF3 A352 Gr LC3
Austenitic
Stainless
Steel
A312 Gr TP304 A403 Gr WP304 A182 Gr F304 A182 Gr F304 A193 Gr B8
A194 Gr 8
A312 Gr TP316 A403 Gr WP316 A182 Gr F316 A182 Gr F316
A312 Gr TP321 A403 Gr WP321 A182 Gr F321 A182 Gr F321
A312 Gr TP347 A403 Gr WP347 A182 Gr F347 A182 Gr F347
Material Pipes Fttg Flg Valves Bolts and Nuts

Effects of Alloying Elements on Steel

•Manganese – strength and hardness; decreases ductility and weldability; effects hardenability of steel.
•Phosphorus – increases strength and hardness and decreases ductility and notch impact toughness of steel.
•Sulfur decreases ductility and notch impact toughness Weldability decreases. Found in the form of sulfide inclusions.
•Silicon – one of the principal deoxidizers used in steel making. In low-carbon steels, silicon is generally detrimental to surface quality.
•Copper – detrimental to hot-working steels; beneficial to corrosion resistance (Cu>0.20%).
•Nickel – ferrite strengthener; increases the hardenability and impact strength of steels.
•Molybdenum –  increases the hardenability; enhances the creep resistance of low-alloy steels.

What are the Steel Pipe Sizes?

Steel pipe sizes

Pipe size is quoted as a “Nominal Pipe Size” or NPS. The origin of the NPS numbers for smaller pipes (< NPS 12) is different to the origin for larger diameter pipes. However, all pipes of a specific NPS number have the same external or outer diameter (OD). The internal diameter will vary depending on the wall thickness of the metal. The reason for this is so that the same structural supports can be used for all piping of a specific NPS number regardless of the wall thickness.

Schedules

Steel pipe schedules are a way to describe the wall thickness of the pipe. This is a critical parameter as it is directly related to the strength of the pipe and the suitability for specific applications. A pipe schedule is a dimensionless number and is calculated based on the design formula for wall thickness, given the design pressure and allowable stress.

Examples of schedule numbers are as follows: 5, 5S, 10, 20, 30, 40, 50, 60, 80, 100, 120, 140, 160, STD, XS, and XXS—with the most common being schedules 40 and 80. As the schedule number increases, the wall thickness of the pipe increases. The schedule number of a pipe therefore defines the internal diameter, as the OD is fixed by the NPS number.

Over 1000 Tons in Stock for Carbon Steel Fasteners!

ISMT & Jindal Steel Pipes Dealers, Original MTR's Provided with All Materials

As one of the biggest carbon steel fastener stockholder and supplier in India, Metallica carries inventory of over 10,000 tons in its warehouses in Mumbai, Maharashtra India. We sell our carbon steel fasteners throughout India, and to international clients. We can supply our carbon steel fasteners not only in industry-standard lengths and diameters, but also in custom length and diameters.

How are Steel Pipes Certified?

Certification of Steel Pipes

Manufacturers issue a Material Test Report or Mill Test Report to validate that the product meets the chemical analysis and mechanical properties specification. The MTR will contain all relevant data to the product and will accompany the product through its lifecycle.

The following are typical parameters that may be recorded on an MTR:

  • Chemical composition including carbon content, alloys, and sulfur
  • Material size, weight, identification, and grade
  • Material heat number, which ties back to the processing batch
  • Mechanical properties like tensile strength, yield strength, and elongation

At Metallica, we will Provide you with Original MTR’s for all Carbon Steel Pipe Products! We will Send Our Test Certificates, along with Quotation