Goliath 1" x 14 TPI UNS Straight Flute Bottoming HSS Tap C220DC4
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Goliath is an Australian precision cutting tool brand supplying HSS taps, threading dies, tap and die sets, thread gauges, and key steel to engineering, manufacturing, maintenance, and toolmaking operations across Australia. This page covers the Goliath UNS Straight Flute Tap - Bottoming HSS, available in 2 diameter options: 1", 3/16".
Goliath tap and die sets provide a complete threading solution for cutting internal and external threads across a range of standard thread forms.
Where this product is used
Goliath tap and die set products are used across engineering workshops, production machining, and industrial maintenance programs.
- Complete threading kits for workshop, maintenance, and toolroom use across the full standard thread range.
- Cutting internal and external threads for bolt and nut manufacture, thread repair, and mechanical assembly.
- Versatile workshop threading where both tap and die capability is required in a single set.
Key specifications
| Specification | Detail |
|---|---|
| Material Grade | HSS |
Selecting the right option
Select the tap and die set by thread standard: Metric for ISO metric fasteners, UNC/UNF for American-standard, BSF/BSW for older British equipment, and BSP/BSPT/NPT for pipe connections. All Goliath sets are HSS — suitable for hand and light machine threading on ferrous and non-ferrous materials.
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Goliath UNS Straight Flute Tap - Bottoming HSS: 1"
SKU: A0201432 | Model: C220DC4
This is the diameter 1" option of the Goliath UNS Straight Flute Tap - Bottoming HSS. Key details for this option: thread form type Unified National Special (UN), drill diameter 24mm, length overall 130mm.
Goliath UNS Straight Flute Bottoming HSS Bright Tap
HSS Bright Finish UNF Hand and Machine Bottoming Tap.
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 Fine (UNF) 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 a 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.
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.