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All Products  ➞ Bordo ➞ Taps & Dies ➞ HSS Hand and Machine Taps ➞ HSS Tap UNC

2" x 4.5 UNC HSS Tap Set

Part Number:3032-2TS
Brand:Bordo
Barcode:9326518101178
Pack Qty:1
Diameter (inch):2
Drill Diameter (mm):45
Lead:Set
Overall Length (mm):200
Pitch (tpi):4.5
Thread Form:UNC

About this item:
  • 2" x 4.5 UNC HSS Tap Set
  • HSS UNC Hand and Machine Tap Set.
  • Unified National Coarse thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
  • 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, aluminium 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.
  • 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.
  • 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.
  • Taper Taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes.
  • Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.