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Steel
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- Building Products
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- ERW - Pipe
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- Metal
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Tools & Gear
- Screwdriver Bits
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Drills
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Masonry
- Cement Sheet Countersink and Drill
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- IMPACT Hex Shank TCT Masonry
- SDS Max
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- SDS Max male to SDS Plus female Adaptor
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- Straight Shank
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Specialist
- Centre Drills HSS
- Colour Band
- Extra Deep Hole HSS-Co5
- Extra Long HSS
- IMPACT Hex Shank HSS Panel Drills
- IMPACT Hex Shank HSS Twist Drills
- Long Series HSS
- Morse Taper Shank
- Panel Drills HSS
- Power-Hex HSS
- Power-Hex with 90??ôS Countersink HSS
- Reduced Shank HSS
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- Wood
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Taps & Dies
- Chrome Alloy Button Dies and Die Nuts
- Chrome Alloy Taps
- Colour Band High Performance Taps
- HSS Drill Taps
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HSS Hand and Machine Taps
- HSS Tap BA
- HSS Tap Brass
- HSS Tap BSF
- HSS Tap BSF Left Hand
- HSS Tap BSPF (G Series)
- HSS Tap BSPT Rc Series Pipe Taper)
- HSS Tap BSW
- HSS Tap BSW Left Hand
- HSS Tap Metric Coarse
- HSS Tap Metric Coarse Left Hand
- HSS Tap Metric Fine
- HSS Tap Metric Fine Left Hand
- HSS Tap NPSF (Dryseal Taper)
- HSS Tap NPT
- HSS Tap NPTF (Dryseal Taper)
- HSS Tap Oversize/Galvanising
- HSS Tap UNC
- HSS Tap UNC Left Hand
- HSS Tap UNEF
- HSS Tap UNF
- HSS Tap UNF Left Hand
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HSS Hand and Machine Taps
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HSS-Co5 Spiral Point (Gun Nose) Taps
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HSS Hand and Machine Taps
- HSS-Co5 Machine Taps
- Tap Wrenches and Die Holders
- Thread Pitch Gauges
- Taps Hand & Machine
- HSS Pipe Taps and Reamers
- Sets
- Button Dies
- Set
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Brushware
- Battery Terminal Brush
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- Thread Adaptors
- Cup - Twist Knot
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- Hex Shank Steel Wire
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- WHEELS
- INSERTS AND FEET
- PowerCoil Thread Repair
- INSERTS & FEET
- Cutting Lubricants
- Specials
- Tools & Gear
- Taps & Dies
- HSS-Co5 Machine Taps
- HSS-Co5 Metric Coarse
- HSS-Co5 Tap UNF Spiral Pt-5/16x24
HSS-Co5 Machine Taps
HSS-Co5 Tap UNF Spiral Pt-5/16x24
Tools & Gear Taps & Dies HSS-Co5 Machine Taps
UNFUNIFIED NATIONAL FINE This 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. Spiral Point Taps are used for machine tapping blind and through holes where there is sufficient clearance to accomodate chips. Manufactured from HSS-Co5 - this modern design tap uses straight flutes supplemented by angular cutting faces at the point to produce a fine finish on the threads. Shallower flutes achieve a stronger cross section allowing the tap to withstand greater cutting forces.
Recommended Products
HSS-Co5 Machine Taps
HSS-Co5 Tap UNC Spiral Pt.-5/8x11
HSS-Co5 Machine Taps
HSS-Co5 Tap UNF Spiral Pt-3/8x24
HSS-Co5 Machine Taps
HSS-Co5 Tap UNC Spiral Pt.-1/4x20