Pipe threads are standardized by the A.N.S. A.N.S. stands for ____. If a technician needed 5/8" ACR for an installation and was located near only a plumbing supply house, what size and type of pipe should he ask for?The following is a ANSI Standard Pipe Thread Recommended Tap size and Drilled Pilot Hole for Taper . National Pipe Thread Taper ( NPT ) is a U.S. standard for tapered threads used on threaded pipes and fittings . In contrast to straight threads that are found on a bolt, a taper thread will pull tight and therefore make a fluid-tight seal. Dec 13, 2018 · The branch pipe is screwed on the Thredolet, which is welded on the run pipe. The threading is generally of the NPT type and conforms to the ASME B1.20.1 specification. Thredolets belong to the “threaded fittings” family and are available in classes 3000# and 6000#. Threadolets are used for smaller pipe sizes and low-pressure applications. all that is required to make a sound plastic threaded connection. Unnecessary OVERTIGHTENING will cause DAMAGE TO BOTH PIPE AND FITTING. Standards and Specifications Molded Schedule 80 PVC products are manufactured to ASTM D 2467 for use with pipe manufactured to ASTM D 1785. Molded Schedule 80 We also stock other high-temperature threads, such as KEVLAR® threads. Kevlar threads are frequently used in removable and reusable insulation blankets for Marine, Aerospace, Industrial and commercial applications. Please consult your sales rep for additional sewing threads that may not be listed here. Teflon Coated Threads (D-18 and D-24) Stainless pipe is also available as both a welded and seamless product. We stock a wide variety of pipe fittings from elbows and tees to valves and flanges, as well as our most popular handrail sizes in a pre-polished to 180 grit. Available Steel Pipe & Tube Grades. 304, 304L, 316, 316L, 310, 321, 410, 2205, Alloy 20 and more!