Natco Agency Park Town, Chennai, Tamil Nadu

Wing nut A Wing Nut or wing nut, a nut (hardware), with a pair of wings to enable it to be turned without tools. It is used where frequent adjustments are needed or part removal can be made quickly at some later stage..

The 303 stainless steel concrete wedge anchor is an expansion type anchor used to fasten/anchor a fixture into solid concrete. The anchor itself is made from 303 stainless steel. The nut, washer and clip are made of 18-8 stainless steel (which is comparable to 303 stainless steel). 303 stainless steel wedge anchors offer a higher level of corrosion resistance and are resistant to many organic and inorganic chemicals, but should not be used in salt water environments. Wedge anchors made from 316 stainless steel offer the best corrosion resistance and can be used in the harshest environments- even salt water. All components of this wedge anchor are made from 316 stainless steel.

Wedge Type The zinc plated concrete wedge anchor is an expansion type anchor used to fasten/anchor a fixture into solid concrete. The wedge anchor itself is made from zinc plated carbon steel. Zinc plated wedge anchors offer some corrosion resistance but are generally used for interior applications only. They are not accepted for use in ACQ treated lumber. Once installed, concrete wedge anchors cannot be removed without causing damage to the surrounding concrete.    

A toothed lock washer, also known as a star washer, has teeth or prongs which extend radially inward and/or outward. This maintains tension and opposes any loosening influence on the fastener. The flexed teeth absorb shock, vibration and slipping. Internal tooth washers have the teeth pointing inward. They are used when the finished appearance requires that the teeth be hidden under the head of the screw, or to avoid the teeth scratching or snagging. Also used with screws with smaller heads. External tooth washers have teeth pointing radially outward. They are used when finished appearance is less crucial as it provides the greatest torsional resistance and therefore locking efficiency because the teeth are on the largest radius.

These are hex head bolts with hotdiped galvanized used in the erection of transmission towers of 110kv,220kv,

THESE ARE HOTDIP BOLTS & NUTS HALF THREADED & FULLY THREADED FROM DIA 12MM TO 16MM USED IN THE FOLLOWING TOWERS, Four legged Angular Bolted Self Supporting Ground Based Towers (From 30mtrs to 100mtrs) Four legged Angular Bolted Self Supporting Rooftop Based Towers (From 9mtrs to 27mtrs) Three legged Tubular & Angular Bolted Self Supporting Ground Based Towers (From 30mtrs to 60mtrs) Three legged Tubular & Angular Bolted Self Supporting Rooftop Based Towers(From 9mtrs to 27mtrs) Four Legged Angular welded Guyed Ground Based Towers (From 12mtrs to 40mtrs) UBR Poles (From 3mtrs to 9mtrs) UBR Ground Based Towers (From 9mtrs to 27mtrs)

A Taper Washer is a washer with one radiused surface, which is designed to be used in conjunction with a mating nut in order to correct for up to several degrees of misalignment between parts.

Structural bolts replaced rivets due to decreasing cost and increasing strength of structural bolts in the 20th century. Connections are formed with two types of joints: slip-critical connections and bearing connections.

A Square nut is a four-sided nut. Compared to standard hex nuts, square nuts have a greater surface in contact with the part being fastened, and therefore provide greater resistance to loosening (though also greater resistance to tightening). Square nuts are typically mated with square-headed bolts.

Any washer designed to prevent a bolt or screw from turning and loosening. Types include Belleville, split and toothed washers. A Spring Washer is a ring split at one point and bent into a slightly helical shape. This allows the washer to exert a spring force between the bolt or screw head and the substrate, helping to prevent the bolt from turning and loosening due to vibration.

The structure for solar panels have to fastend twith the help of hot dip galvanized bolts and nuts.the sizes for the solar station vary from 8mm to 16mm dia.

Sleeve Type Sleeve Anchors are installed by making cylindrical conical hole is made with an uncut drill bit

Self Drilling Type Similar to a sheet metal screw, but it has a drill-shaped point to cut through the substrate to eliminate the need for drilling a pilot hole. Designed for use in soft steel or other metals. The points are numbered from 1 through 5, the larger the number, the thicker metal it can go through without a pilot hole. A 5 point can drill a 0.5 in (13 mm) of steel, for example.    

A Screw, is a type of fastener characterized by a helical ridge, known as an external thread or just thread, wrapped around a cylinder. Screw threads are designed to cut a helical groove in a softer material as the screw is inserted. The most common uses of screws are to hold objects together and to position objects. Often screws have a head, which is a specially formed section on one end of the screw that allows it to be turned, or driven. Common tools for driving screws include screwdrivers and wrenches. The head is usually larger than the body of the screw, which keeps the screw from being driven deeper than the length of the screw and to provide a bearing surface. The cylindrical portion of the screw from the underside of the head to the tip is known as the shank; it may be fully threaded or partially threaded. Machine Type ASME standards specify a variety of �Machine Screws� in diameters ranging up to 0.75 inches. These fasteners are often used with nuts and they are often driven into tapped holes. In practice, they tend to be mostly available in smaller sizes and the smaller sizes are referred to as screws or less ambiguously as machine screws.

Roofing Bolt is a type of machine screw that has a round or flat head and is threaded to the head. They are usually made of low grade steel, have a slot or Philips drive, and are used to join sheet metal parts using a hex or square nut.

A Plain Washer is a thin plate (typically disk-shaped) with a hole (typically in the middle) that is normally used to distribute the load of a threaded fastener. Washers are also important for preventing galvanic corrosion, particularly by insulating steel screws from aluminum surfaces.

A Nylon insert lock nut, polymer insert lock nut, is a kind of nut that includes a nylon collar insert. The insert is placed at the end of the nut and its inner diameter (ID) is slightly smaller than the major diameter of the screw. The insert deforms elastically over the threads of the screw, but threads are not cut into the nylon. The nylon insert locks the nut in two ways. First, it forces the bottom face of the screw threads against the top face of the nut threads, increasing the friction between the two. Second, the nylon applies a compressive force against the screw itself. Nyloc nuts retain their locking ability up to 250 OF (121 OC).    

L and T foundation Bolts We offer a wide assortment of foundation bolts that are extensively used in various industrial applications. Fabricated using high quality metal, these foundation bolts are known for high tensile strength & excellent durability. These foundation bolts that are being used in diverse industries can also be developed as per the customers' specifications to satisfactorily meet their exact requirements. These are fabricated with high grade steel and its alloys such as IS2062 Grade-A, En-8, En-19 material as per IS-1367 Class 8.8 / Class 10.9 or as per the requirement of the client.

A J bolt is a J-shaped bolt which can be used in a variety of applications.These bolts can be made from several different metals, and subjected to various treatments, depending on how and where they will be utilized. In a J bolt, the threading runs along the flat arm of the J. One could think of a J bolt as half a U Bolts, since that is essentially what it is. The diameter of the bolt can be varied, as can the type of threading, and the angle and size of the hook at the base of the bolt. Manufacturers can also cater to specific requests in the case of larger orders. To attach something to a J bolt, threaded nuts and washers can be utilized as needed. One common use of J bolts is as cast-in-place anchor bolts.

HOT DIP GALVANIZED WASHERS & SPRING WASHERS We provide wide range of Hot Dip Galvanized Washers to the esteemed customers. These products are widely known for their long service life, sturdy construction and durability.

WE PROVIDE CUSTOMISED U BOLT AS PER THE SPECIFICATION & DESIGN DRAWINGS OF OUR CLIENTS. OUR U BOLTS ARE IN ACCORDANCE WITH EXISTING STANDARDS AND NORMS OF THE TRANSMISSION LINE OF INDUSTRIES. SIZES FROM 8MM TO 20MM GR 4.6,6.8

HOT DIP GALVANIZED BOLTS & NUTS The coating may be matt grey because the higher silicon content of the steel makes them more reactive towards the molten zinc.

Foundation bolts are intended for anchoring structural supports to concrete foundations. Such structural supports include building columns, column supports for highway signs, street lighting and traffic signals, steel bearing plates, and similar applications.

Hex Nut is the most common shape is hexagonal, for similar reasons as the bolt head - 6 sides give a good granularity of angles for a tool to approach from (good in tight spots), but more (and smaller) corners would be vulnerable to being rounded off.