You may refer to the drill bit size chart below for a quick guide to make sure you get the right tools and types. If you cannot find your drill bit size, use the formula Thread Diameter Pitch Tapping Drill Size. 3/4 - 1-1/2 pitch of insert "set down" to allow forįor plug Taps 5/16" or M8 and smaller. Heli-Coil taps helicoil chart various types and styles produce holes for Tolerance Classes 4H5H or 3B and 5H or 2B for use in the general range of aluminums, magnesiums, mild steels, free helicoil chart stainless steels and other free machining materials. FAQ Standard Drill Bit Size Chart s The table below shows the tap drill size for the given thread size. HELICOIL® Plus corresponds to today’s trend toward lightweight construction (e.g.metric sizes 2 (M2.2) thru 1/2 (M12) for rapid installation of Heli-Coil. Master Thread Repair Sets are also available and contain 7 Inch Coarse Size Inserts, 6 Inch Fine Inserts, and 8 Metric sizes. Helicoil Tap Drill Chart Pdf Metric - WebHelicoil Drill Chart. Drill Size: Wire Thread Insert Length: 1D: 1.5D: 2D: 2.5D: 3D: 1/8-40 : 3.3 mm : 0.125 : 0.188 : 0.250 : 0.313 : 0.375 : 3/16-24 : 5.0 mm : 0.188 : 0.281 : 0.375 : 0. The following recommendations apply for minimizing the effects of corrosion on Heli-Coil ® stainless steel insert assemblies at operating temperatures less than 800☏ and using carbon steel or alloy steel bolts. Available from stock are Inch Coarse kits in sizes 4 through 1-1/2' and Inch Fine kits in sizes 6 through 1-1/2' as well as Metric Coarse kits M3 through M20 and Metric Fine kits M8 through M16. The effect of corrosion on threaded assemblies is dependent on many factors: This allows for the design of assemblies where the bolt will fail before the parent material.Īssembly strength is a function of shear area and the shear strength of both the bolt and parent material.įor detailed charts on specific load values, Heli-Coil ® Technical Bulletin 68-2 (inch) covers the complete range of sizes, parent materials, and bolt strengths. This choice of insert length balances the bolt tensile strength against the shear strength of the parent material. O-Ring Sizes: Pipe Threads: Screw Extractors: Sheet Metal Gauges & Weights: Socket Head Cap Screws: Taper Calculations: Taper Pins: Taper Shank Dimensions: Washer Sizes: Wire Gauges: Wood Screw Dimensions: Metric Tap Chart Tap Drill Clearance Drill Aluminum, Brass, Plastics Steel, Stainless Steel, Iron. In the Heli-Coil ® catalog (HC2000), the lengths are listed as multiples of the nominal thread diameter of the screw 1, 1-1/2, 2, 2-1/2, and 3. Uninstalled, Recoil inserts are greater in diameter than the tapped hole in. Heli-Coil ® offers maximum design flexibility while adhering to conservative engineering practice, allowing use of Heli-Coil ® inserts in virtually any application.įive lengths of inserts are available. For detailed charts on specific load values, Heli-Coil ® Technical Bulletin 68-2 (inch) covers the complete range of sizes, parent materials, and bolt strengths. HeliCoil HeliCoil Drill Sizes HeliCoil Drill Chart HeliCoil Specs HeliCoil Data HeliCoil.
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