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HSS Tap UNC Bottoming-5/16x18

HSS Tap UNC Bottoming-5/16x18
($8.09 + GST)


Code: 514106
Brand: Toolex
Product Details
HSS Tap UNC Bottoming-5/16x18

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The thread profile of UNC is the same as for metric threads and is described in the JIS B0206 standard. The thread is described by its major diameter and the number of threads per inch of length (TPI). This thread series is commonly used in the mass production of bolts, screws and nuts. It is used for threading into lower tensile strength materials (bronze, brass, aluminum and plastics) to obtain the best resistance to stripping of the internal thread. It is also used on quick assembly or disassembly or if corrosion or slight damage is possible. Features: Unified National Coarse. UNC is described by its major diameter and the number of threads per inch of length (TPI). Manufactured from high speed steel material to International DIN standards (DIN352/351). Available in Taper, Bottoming and Intermediate styles in all sizes. Suitable for materials up to 1000N/mm2. Suitable for both hand & machine operation. Bright finished with straight flute. Bottoming Taps have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole. Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap Specifications: Size - 5/16" Lead - Bottoming Material - High Speed Steel (HSS) Type - Straight Flute

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