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HSS Hand and Machine Taps

TAP HSS 3/8 x 19 BSPT SET

Stock Code : GOL.C83XHD4

Tools & Gear Taps & Dies HSS Hand and Machine Taps

Pipe Taps Pipe Taps are supplied with PARALLEL threads or TAPER threads. They are much shorter than a similar size of regular hand tap - but the design features are the same. Goliath HSS taps provide a high hardness to toughness ratio - compressive and tensile strength - good abrasion resistance and resistance to micro-chipping - ensuring a long tool life. Tapered Pipe Taps are used for tapered threading by hand or machine. BSPTBRITISH STANDARD PIPE TAPER (RC SERIES PIPE TAPER) This is based on the Whitworth thread form - a symmetrical V-thread with an angle of 55 deg;. BSPT has been widely adopted internationally for interconnecting and sealing pipe ends by mating an external (male) with an internal (female) thread. The thread diameter increases along the length of the thread allowing the coupled pipes to form a seal when torqued as the flanks of the threads compress against each other. The taper is 1 to 16 - meaning that for each 16 mm increase in the distance from the end - the diameter increases by 1 mm. TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. INTERMEDIATE TAPS have a lead of four threads and are used in most general purpose applications to cut a thread true to a pre-drilled pilot hole. 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. Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.

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