Welfast Fasteners Pvt. Ltd. BBD Bag, Kolkata, West Bengal

Welfast Wedge Anchors are fully threaded, stud type, high-grade steel anchors for use in solid concrete or grout-filled concrete masonry. It is assembled with a three-segment expansion clip and supplied complete with nut and washer. Expansion clip ensures uniform holding capacity that increases as tension is applied. The threaded stud version is available in six diameters and multiple lengths. Threaded studs are set by tightening the nut. Wedge anchors are best suited to static applications.  

Welfast Wash Basin Anchors provide a quick and clean installation solution for sanitary fixings. An easy to use and quick to install, these fixings have a broad thread for the wall and a fine thread for the basin, thus giving a strong movement free performance with the supplied S-Plugs. A set of Wash Basin Anchor consists of the following : 2 pieces of M10 Fixing Bolts 2 pieces of S-Plugs 2 pieces of flanged head nylon nuts 2 pieces of hexagonal nut

Welfast S Plugs also known as Nylon Fish Anchor, provide a quick and clean installation solution for light weight fixings. High quality nylon dampens vibrations, absorbs noise and provides good electrical insulation with excellent resistance to material degradation.  

Welfast Fasteners specializes in Pin Type Anchors for push through applications. Pin Type Anchors are impact-expansion type concrete anchors with an interior hole extending the length of the anchor. A hardened drive pin comes along the assembly inserted in the bolt. The anchor is threaded on the upper portion where the drive pin is inserted. Other end of the anchor has four equally spaced slots for a portion of its length, with ribs extending the circumference of the anchor for a portion of its length. Pin Type Anchors are yellow dichromate plated over zinc. 

Welfast Fasteners specializes in Pin Type Anchors for push through applications. Pin Type Anchors are impact-expansion type concrete anchors with an interior hole extending the length of the anchor. A hardened drive pin comes along the assembly inserted in the bolt. The anchor is threaded on the upper portion where the drive pin is inserted. Other end of the anchor has four equally spaced slots for a portion of its length, with ribs extending the circumference of the anchor for a portion of its length. Pin Type Anchors are yellow dichromate plated over zinc. 

Nylon Anchors are pre-assembled through fixing, a light duty nail expanding for solid masonry and hollow wall constructions. The design of the expansion nail used in the Nylon Anchor is such that it can be removed if need be. It has a small slot across the head of the nail to accommodate a small screwdriver blade, when turned anti-clockwise by the screwdriver the nail will be wound part way back out of the nylon sleeve. This enables a claw hammer to be hooked under the protruding head of the nail and pulled out of the nylon sleeve. Having withdrawn the expansion nail fully you can now pry out the nylon anchor body.

Drywall Screw is a specialized self-tapping screw with a cylindrical shaft. These screws almost always have a Phillips Bulge Head rather than a slotted head, which provides additional control for installers. In addition of a standard drill, installers also use a tool known as a drywall dimpler, which has an adjustable nose to install a drywall screw without tearing the paper on each sheet. A standard drywall screw can be readily identified by its black finish. This black coloring comes from a phosphate mineral coating that is applied to these screws. This coating helps to minimize rusting and corrosion as the screws are exposed to wet joint compound or paint. FEATURES APPLICATIONS INSTALLATION GUIDE TECHNICAL DESCRIPTION   The primary benefit offered by drywall screws is their Bugle Head. This means that the entire screw lies flush with the surface of the sheet, creating a smooth and even finish. Less prone to getting pulled through the wood due to Bugle Head. This type of head also helps prevent the drywall screw from breaking the paper surface, a common problem with nails. Drives fast and efficient. The black head adds to the decorative appeal. Fairly thin, so they are less likely to split the wood. Threaded through entire length thereby maximizing gripping power. Good Corrosion resistance due to black phosphate coating. Easy to install and remove. Head does not sink into the wood easily as does with other wood screws. Precise cutting edges to improve drill performance with less effort. Relatively Cheap. At least 3 times the pull-out strength of nails.

Welfast Drop-In Anchors are internally threaded anchors for bolts and threaded rods. These are zinc plated steel tubular expansion shield and a solid, cone-shaped expander plug. The shield has four equally placed slots for a portion of its length and the bottom part may be knurled. The shield also has a smooth, flangeless top that allows for either flush or countersunk installation. The bottom lip of the shield is tapered to allow maximum depth and holding power.

Material : Stainless Steel

Shape : Round

Grade : AISI, ASTM

Color : Grey

Engineered to consistent performance and speed, Welfast Self Drilling Screws offer quality with precision. These are cold formed with rolled thread for superior strength and fast drilling performance. Strictly adhering to DIN Standards, Welfast Self Drilling Screws are available in a dynamic assembly of diameter ranging from #10 - #12 with length ranging from 20mm – 100mm. Additional options of Coarse Thread and Fine Thread adds value to selection.

Combining the features of Bright Zinc and Dacromet range of Self Drilling Screws, Welfast Double Thread Self Drilling Screws are engineered to fasten insulated roofing panels, composite panels and insulated cladding to steel purlins and wood structures. These screws are available in Coarse and Fine Thread options in Dacromet coatings.

Welfast Chemical Anchors are high performance anchor system for use in safety critical applications. The assembly works on the principle of adhesion between concrete and chemical (resin) thus eliminating any effects of expansion forces. Chemical anchors are highly suitable in applications requiring close edge and spacing distances. Also these are a preferred choice in wet conditions as well underwater applications.