3/16" x 32 UNS HSS Tap Set - Goliath

About this item:

• 3/16" x 32 UNS HSS Tap Set - Goliath
• HSS Bright Finish UNS Hand and Machine Tap Set (T, I, B).
• HSS Straight Flute Short Machine and Hand Taps.
• These general purpose taps are ideal for creating new threads in a wide variety of materials.
• 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.
• Unified National Special (UN) thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
• The thread profile of UNS is the same as for UN and 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).
• UNS threads need to have the TPI specified; however the number of TPI for a specific diameter is limited.
• For example, within 1?2" diameter size, the TPI allowed are: 1?2" - 12 UNS, 1?2" - 14 UNS, 1?2" - 18 UNS, 1?2" - 24 UNS and 1?2" - 27 UNS.
• 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.