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The tapped hole must be held within the stated pitch diameter limits for the required class of fit for the installed Heli-Coil insert. When anodize, Iridite or other.
Oct 20, 2017 – M6 x 1 Helical Inserts (1xD, 1.5xD, 2xD), Drill Bit, STI Plug Tap & Installation Tool. Internal Thread Size: M6 x 1; Length: 6.0mm (1xD), 9.0mm (1.5xD), 12.0mm. Helical Inserts are often known by the brand names Helicoil or Recoil Screw.
TAP. Tap the hole using the Heli-Coil tap supplied in the kit. Check the size on. Thread. Kit. Inserts. Tap. Installation. Insert. Insert. Drill*. Box. Size + Length. Part No. M6 x 1. 9.0. R1084-6. 12. 2087-6. 3747-6. B. 1/4. M8 x 1.25. 12.0. R1084-8.
I have M6 thread inserts, and I know i need a to drill it out with a 1/4 inch. Most helicoil kits include a special tap. at least in my experience.
Heli-Coil drilling data – inch. INCH – DRILLED HOLE DIMENSIONS. Suggested Drill Size. Nominal. Thread size. Aluminum. Steel,Magnesium,Plastic. UNIFIED.
SCREW THREAD INSERT (STI) TAP DRILL CHART. NOMINAL. THREAD SIZE. M6, M6.3. 2. 2 1/2. 1. 5/16 .255 .191 .260 .323. 5/16. M7, M8. 2. 2 23/32. 1 1/8.
Today Heli-Coil delivers a vast array of high quality inserts and installation tools designed to meet. Metric Coarse M2.5 through M6. Drill 2. Countersink 3. Tap 4. Gage.