Goliath Threading Tools 1/2″ x 13 UNC Fluteless HSS-Co5 Tap – Goliath

Description

1/2″ x 13 UNC Fluteless HSS-Co5 Tap – Goliath
HSS-Co (Cobalt) Bright Finish UNC Fluteless Machine Tap.
HSS Fluteless (Roll Form) Taps.
Fluteless taps are also referred to as “Roll Form” or “Thread Flow” taps.
Unlike standard taps, fluteless taps create internal threads by pressure deformation, rather than by material removal.
As a result, no chips are formed as no material is removed.
The thread is formed by the tap in the ductile material creating threads that have a smoother surface and greater tensile strength under dynamic stress than cut threads.
It is essential to use a high quality lubricating fluid when using fluteless taps.
Materials with a minimum elongation of 5% and a tensile strength no greater than 1,000 N/mm2 are suitable for thread forming.
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.
Manufactured from HSS this fluteless tap is designed for use in medium tensile materials and is for hand or general machine use.
IMPORTANT – Fluteless Taps use different tapping drill sizes than standard taps.
Category: Goliath Threading Tools, Taps Hand & Machine, HSS-Co5 Fluteless Taps, UNC
Drill Diameter (mm): 11.7
Overall Length (mm): 89
Pitch (tpi): 13