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

1/4" x 28 Left Hand UNF Taper HSS Tap

Part Number:3092-1/4T
Brand:Bordo
Barcode:9326518002925
Pack Qty:1
Diameter (inch):1/4
Drill Diameter (mm):5.5
Lead:Taper
Overall Length (mm):66
Pitch (tpi):28
Thread Form:UNF

About this item:
  • 1/4" x 28 Left Hand UNF Taper HSS Tap
  • HSS UNF LEFT HAND Taper Hand and Machine Tap.
  • Unified National Fine thread form was introduced in 1948 as an attempt to standardise thread forms in the USA, Canada and the UK.
  • The thread profile of UNF 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).
  • When used on external threads this series has greater tensile stress area than coarse threads of the same size.
  • Fine series threads will resist stripping out better than coarse threads in areas where the external and mating internal threads are subjected to loads equal to or greater than the capacity of the screw or bolt.
  • Fine threads are also used where the length of engagement is limited 1-1/4 or where wall thickness demands a fine pitch.
  • 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.
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Part Number:3092-1/4TB11DA3L
Title:1/4" x 28 Left Hand UNF Taper HSS Tap1/4" x 28 UNF Taper Left Hand HSS Tap - Goliath
Barcode93265180029259349009012081
BrandBordoGoliath
Thread FormUNFUNF
Diameter (inch)1/41/4
Drill Diameter (mm)5.55.5
LeadTaperTaper
Overall Length (mm)6666
Pitch (tpi)2828
TPI28
Tolerance2B
Pack Qty11
# Flutes3
StandardISO529