![]() Henderson, Greensboro, Plano, Newark, Toledo, Lincoln, Orlando, Chula Vista, Jersey City, Chandler, Fort Wayne, Buffalo, Durham, St. Louis, Lexington, Stockton, Pittsburgh, Saint Paul, Anchorage, Cincinnati, Minneapolis, Tulsa, Wichita, New Orleans, Arlington, Cleveland, Bakersfield, Tampa,Īurora, Honolulu, Anaheim, Santa Ana, Corpus Christi, Riverside, St. New York, Los Angeles, Chicago, Houston, Philadelphia, Phoenix, San Antonio, San Diego, Dallas, San Jose, Austin, Jacksonville, San Francisco, Indianapolis,Ĭolumbus, Fort Worth, Charlotte, Seattle, Denver, El Paso, Detroit, Washington, Boston, Memphis, Nashville, Portland, Oklahoma City, Las Vegas,īaltimore, Louisville, Milwaukee, Albuquerque, Tucson, Fresno, Sacramento, Kansas City, Long Beach, Mesa, Raleigh, Omaha, Miami, Oakland, John's,īarrie, Kelowna, Abbotsford, Mission, Sudbury Kingston, Saguenay, Trois-Rivieres, Trois Rivieres, Trois-Rivières, Guelph, Moncton, Brantford, Saint John, Thunder Bay, Peterborough,Ījax, Aurora, Brampton, Brock, Burlington, Caledon, Clarington, Durham Region, Oshawa, Pickering, Whitby, Halton Hills, Milton, Oakville, Mississauga, New market, Richmond Hill, Vaughn, Orangeville Catharines, Niagara, Halifax, Oshawa, Victoria, Windsor, Saskatoon, Regina, Sherbrooke, St. Toronto, Mississauga, Scarborough, Laval, Montreal, Montréal, Vancouver, Ottawa, Gatineau, Calgary, Edmonton, Québec City, Winnipeg, Hamilton, Kitchener, Cambridge, Waterloo, London, St. Manitoba, MB, Saskatchewan, SK, Alberta, AB, British Columbia, BC, Northwest Territories, NT, Nunavut, NU, Yukon, YT Scotia, NS, New Brunswick, NB, Prince Edward Island, PEI, PE, Quebec, PQ, QC, Ontario, ON, Servicing the Canadian provinces and territories of ![]() Have to be slightly increased or decreased to obtain good thread Depending on the materialīeing tapped and the depth of the tapped hole, the hole size may ![]() The tap drill sizes shown for form taps are only a In many cases the hole diameter does not correspond to a numberedĭrill, so the closest millimeter drill should be selected. Minimum diameter should be used for soft and ductile materialsĪnd the maximum drill diameter for harder and more difficult materials. (*) as a function of the major diameter is provided in three groupsĪnd each group has a minimum and maximum for tap drill size. As the length of the hole increases, the percentage of That 75% thread be adopted only for soft materials and short threaded Reaming helps control hole size but is not required.Because these small taps are fragile, it is recommended Straight pipe threads can be form tapped using only a high quality drilled hole.Straight hole procedure will reduce tapping torque and improve tool life. The benefits of burnished, high quality threads at the top of the hole provide excellent sealing capability for the part. The bottom of the hole may have partially formed crests with open “RABBIT EARS”. The straight hole method will result in a full, sharp-crested threads at the top of the hole. The Jarflo tap will ultimately produce the proper tapered thread by forming the material from the top to the bottom of the hole. Straight Hole – many applications for tapered pipe threads may use a straight hole.Tapered holes require the most torque and HP for tapping. Tapered hole may be drilled, reamed or cored. Tapered Hole – A pre-tapped tapered hole will result in a consistent percent of thread height the entire depth of thread in the piece part.There are two choices in the hole preparation for a Jarflo tapered pipe tap: It is not practical to thread form NPTF & NPSF threads because 100% thread is required, and the crests need to be fully formed. These benefits include improved thread finish, stronger threads, longer tap life, faster tapping speeds and no chips. Jarflo roll form pipe taps (NPT & NPS) have significant advantages over cutting taps in many applications.
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