Ptfe coated bolts are nonwetting a since surfaces coated with ptfe are both oleophobic and hydrophobic, they are not readily. The low coefficient of friction means that the bolt has a reduced torque requirement. Ptfe coated fasteners provides great corrosion resistance, very low coefficient of friction, consistent tensioning and ease of installation and removal. Astm standards for mechanical fasteners and related process 2nd edition, inch fastener standards 8th edition. Ptfe bolts are inert to most chemical environments including organics, acids, bases, mixed chemicals and hyrdofluoric acid. These bolts are typically bought and sold in a plain, bare metal finish but are often hotdip galvanized, zinc plated, xylan coated, ptfe coated, or otherwise coated for corrosion resistance. Due to the absence of nut locking oxides after extensive exposure to corrosive environments, fasteners with finish ptfe fluoropolymer coated process do not need to be removed by torching, cutting or nut splitting. Previously hot dip, galvanized, cadium or zinc plated fasteners were considered the standard. We stock many different sizes of xylan coated studs and. Stainless steel fasteners, used in many different industries, are coated for lubricity and antigalling. Astm a320 l7 stud bolt manufacturer,astm a320 l7m stud bolt with two nuts,asme b18. The coatings chemical resistance, and easy oneasy off characteristics are perfect for these environments. Ptfe coated fasteners manufacturers ptfe coated bolts ptfe.
Bolts broke while tightening at a dow chemical plant at sarnia, ontario, canada. For example, one of the most popular uses of ptfe coated b7 studs is in the food industry, where nonstick applications are required in food grade coating. We make these ptfe coated studs available in diameters of 12 to 4 and length of 25mm to. We have assorted ptfe coated bolts, ptfe lining, ptfe moulded products, ptfe coated nuts, ptfe coated studs and glass process plant, under the wide spectrum of offered products. We offer a large precut and packaged stud bolt range exstock in various coatings including plain, zinc plated, mechanical galvanised, hot dip galvanised, ptfe and cadmium ptfe.
Technical metal corporation offers a wide variety of specialty fasteners produced in ptfe, or polytetrafluoroethylene, including but not limited to, screws. The torque values are approved for spiral wound graphite and ptfe filled gaskets, graphite sheet gaskets ghe and ghr types, ring joint, double jacketed and camprofile gaskets with graphite and ptfe lining. All material included on this page is informational only, and should not be used as ones sole source for design purposes, south coast industrial metals, inc does not guarantee the accuracy of the information on this site, and retain no liability for the use or misuse of the. The above table is applicable only for a193 grade b7 and a193 grade b16 stud bolts. Pvdf bolts kynar bolts also excel in high purity and lowpermeability applications such as pharmaceutical and semiconductor processing. Teflon coated b7 stud bolts are typically used in applications where a low friction, smooth and corrosion resistant coating is necessary. Tighter corrosion tensions are achieved with less requeired torque with b7 teflon stud bolts. Extensive testing and field use have proven that the future of coated fasteners lies. Ptfe coated bolts have a low coefficient of friction a the coefficient of friction of ptfe is generally in the range of 0. Ptfe is short for polytetrafluoroethylene, a chemical applied to common bolting materials such as b7 stud bolts to provide corrosion and chemical resistance some other common coatings for ptfe coated fasteners are teflon and xylan. The b7 studs with 2h nuts are commonly used by turnaround groups, operations and maintenance departments, and contractors at many chemical plants, refineries, and offshore platforms.
Here at lightning bolt and supply we stock an immense inventory of ptfe fasteners, including, but not limited to. Astm a193 b7 b7m fluorocarbon coated ptfe stud bolts rod with astm a194 2h nuts. Regardless weather you want a xylan 1424 blue a193 b7 stud bolts we consider very standard, or xylan black b16 hex bolts, we are experts at ptfe coated fasteners. Catalogue for ptfe fluoropolymer fluorocarbon coating for. Teflon and xylan coatings for fasteners meet the concerns from engineers on the subject of corrosion. Torque for flange bolting b7l7 studs stud diameter tension size ibf torque torque torque torque inch nm ft. Ptfe coating factory showing production of ptfe coated. Available for sameday shipping in a wide variety of sizes, each is expertly coated with the proprietarydramatic improvements in efficiency, life expectancy and corrosion resistance are claimed to be imparted to nut and bolt connectors by the. In addition to resistance to corrosion the ptfe based coating offers permanent lubrication and antigalling properties to the interface between nut and bolt.
Ubolts in stock stainless steel, ptfe, hdg hot dip galvanized, neopreme coatedamong these are. Ptfe coated studs, bolts and nuts technical specifications. Ptfe coated fasteners studs,bolts,washers and nuts. We offer an extensive range of stud bar materials exstock including b7, l7, b16, b8, b8m, duplex and super duplex materials from which stud bolts can be manufactured. We are capable of providing a full gambit of colors and products. Ptfe coated studs, ptfe coated bolts, ptfe coated nuts, steel. Ptfe coated studs, bolts and nuts,china ptfe coated studs. Ptfe fasteners and ptfe b7 studs are used in wide variety of industries, including the oil and gas industry. Lubricate on bolt threads and nut faces with compatible antiseize. Ptfe coated bolts reference chart ptfe coated bolts. Ptfe coated fasteners like hex bolts,studs,nuts,washer,pins. Ptfe coating factory showing production of ptfe coated fasteners studs,bolts,washers and nuts. Offered collections of these products are manufactured by employing qualitative materials and progressive technology. Buttweld fittings ptfe coated bolts manufacturer from mumbai.
The water works industry takes advantage of the superior corrosion resistance properties by coating thead bolts for underground service. Lightning bolt offers a wide variety of ptfe fasteners. A b ou t th e a u th orw a y n e w a l l a c e w ayne w allace is the president of applied bolting technology products. These screws have good chemical resistance and may be mildly magnetic. Extensive testing and field use have proven that the future of coated fasteners lies with fluoropolymer coatings. View teflon coated fasteners, ptfe coated threaded rod price. Manufacturing process, insert tapping, heat treatment.
Stud bolts bolting torque tables table 5 ptfe coated. Ptfe coated bolt coefficient of friction plain bolt coefficient of friction sigma fasteners, inc. The superior ptfe coating and superior finishing support provided in these studs also make these highly preferred by the customers. Download the whitford brochure here whitford fastener brochure if you cannot find what you are looking for, please contact one of our experienced team members. Please be aware of a failure with ptfe coated b7 studs. Stud bolts bolting torque tables table 1 astm a193. The company provides bolting consulting services and manufactures direct. Ptfe bolts are made from the fluoropolymer polytetrafluoroethylene and are known for being exceptionally corrosion resistant and inert at elevated temperatures. Stud bolts bolting torque tables table 5 ptfe coated astm.
Fluoropolymer ptfe coatings and linings provides solutions for corrosion protection. Ptfe coated fasteners provides great corrosion resistance, very low coefficient of friction, consistent tensioning and. Ptfe coated fasteners ptfe coated boltsptfe coated studs. Over seventy years ago a dupont scientist, discovered polytetrafluoroethylene. Ptfe coated studs, bolts and nuts ptfe coated fasteners provides great corrosion resistance, very low coefficient of friction, consistent tensioning and ease of installation and removal. Ptfe coated bolts,china ptfe coated bolts suppliers and. Pdf antiloosening performance of coatings on fasteners. Tightening torque for ptfe coated stud bolts astm a193 b7 and astm 193 b16 standards. Ptfe coated fasteners like hex bolts,studs,nuts,washer. Torqbolt maintains a huge stock of ptfe coated bolts including coated b7 studs and coated 2h nuts. This table is applicable for ptfe coated bolts with k0. May 14, 2012 ptfe coated fasteners provides exceptional corrosion resistance, low coefficient of friction, consistent tensioning and subsequent ease of installation and removal. This chart gives the torque value for the final pass. Ptfe coated studs, ptfe coated bolts, ptfe coated nuts.
Stud bolts bolting torque tables table 1 astm a193 and. Ptfe coated fasteners provides exceptional corrosion resistance, low coefficient of friction, consistent tensioning and subsequent ease of installation and removal. Mar 31, 2018 part of what makes teflon coated bolts great is the fact that they are just a joy to work with. These fluorocarbon coated fasteners are extensively used in the valves which are used in offshore equipments. B7 threaded studs and short, headed bolts are readily available in the marketplace. Ptfe coated fasteners, ptfe coated bolts and nuts, teflon. Grade b7 bolts are commonly used in pipe flange connections. Indias largest ptfe coated b7 studs, nut bolt manufacturer, ptfe coated threaded rod. A variety of fastener types and sizes are coated at our facility.
Ptfe coated nuts are one of the most sought after nonstick products because the. Exporter of coated bolts ptfe fasteners, teflon coated stud bolts and nuts, a193 b7 ptfe stud bolts and a193 b7 ptfe hex bolts offered by rimco overseas, mumbai, maharashtra. The most widely used application is on b7 studs with 2h nuts. Ptfe fasteners xylan coated stud bolts and nuts in stock.
We offer a large precut and packaged stud bolt range exstock in various coatings including plain, zinc plated, mechanical galvanised, hot dip galvanised, ptfe and cadmiumptfe. The damage caused by corrosion has both a direct cost and an indirect cost to engineering companies in the gas and oil and exploration sector, it is for this reason ptfe coatings are emerging as an innovative alternative to corrosion protection. All material included on this page is informational only, and should not be used as ones sole source for design. Dec 17, 2012 ptfe coating factory showing production of ptfe coated fasteners studs, bolts,washers and nuts. Ptfe is the name trademarked by dupont for polytetrafluoroethylene, or ptfe ptfe is a synthetic fluoropolymer ptfe has temperature stability ptfe has a low coefficient of friction. Teflon coated bolts cost efficient fasteners service. Fluorocarbon coated fully threaded rod with astm a194 2h. In this article, well refer to all of them as ptfe. Ptfe coated fasteners, bolts and nuts, teflon coated screws and. Teflon coated b7 studs, l7 studs, a307 stud bolts, nuts, and washers. Ptfe coating stud offered come in perfectly coated finish that also safeguards these studs from corrosion.
Part of what makes teflon coated bolts great is the fact that they are just a joy to work with. Ubolts in stock stainless steel, ptfe, hdg hot dip. This essentially just means that the nut is easier to fasten and easier to loosen, whether youre using a wrench or a power tool. Ptfe coated nut bolt have the highest operating temperature as compared to. Low grade carbon plated zinc, 304 stainless steel, 316 stainless steel, neopreme coated, and hotdipped galvanized.
Due to the absence of nut locking oxides after extensive exposure to corrosive environments, fasteners with finish ptfe fluoropolymer. How the versatile family of xylan coatings can help solve your. Pvdf bolts kynar bolts have the characteristic stability of fluoropolymers when exposed to harsh chemical and ultraviolet environments but are much stronger mechanically than ptfe or pfa polymers. Manufacturer is reported to be sun fasteners located in ningbo, china. Suggested torque values for use with teadit 905 metalbest. Fluorocarbon coated fully threaded rod with astm a194 2h nuts. Ptfe coated fasteners manufacturers ptfe coated bolts. Ptfe coated bolts polytetrafluoroethylene coated bolts.
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