Goliath 5/8" x 11 TPI BSW Bottoming Left Hand HSS Bright Tap - B17AC4L
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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 BSW Bottoming Left Hand HSS Bright Tap, available in 13 diameter options: 1/8", 1/4", 1/2", 1", 3/16", 3/8", 3/4", 5/32" and 5 more.
Goliath BSW tap and die sets cut British Standard Whitworth threads, the original imperial thread standard, for maintenance and repair of older British equipment.
Where this product is used
Goliath bsw tap and die set products are used across engineering workshops, production machining, and industrial maintenance programs.
- Cutting British Standard Whitworth threads for repair and maintenance of older British equipment.
- Heritage engineering, classic vehicle restoration, and vintage machinery maintenance.
- Toolrooms holding the full range of imperial British thread standards.
Key specifications
| Specification | Detail |
|---|---|
| Material Grade | HSS |
Selecting the right option
BSW (Whitworth) sets suit heritage engineering and vintage machinery maintenance. Confirm the thread standard is BSW — Whitworth and BSF are different thread forms with different pitches. Select the set covering the size range required for your maintenance program.
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Goliath BSW Bottoming Left Hand HSS Bright Tap: 5/8"
SKU: A0197672 | Model: B17AC4L
Diameter 5/8". Goliath BSW Bottoming Left Hand HSS Bright Tap
Left Hand HSS Bright Finish BSW 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.
British Standard Whitworth angle of thread is 55 degrees as opposed to 60 degrees in Metric and Unified threads.
This thread form was developed by Sir Joseph Whitworth in 1841.
The thread form has rounded roots and crests and is specified in BS84:1956.
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.