Goliath 1-1/8" x 8 TPI UN Intermediate HSS Bright Tap C821CB4
Available
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 UN Intermediate HSS Bright Straight Flute Tap, available in 10 diameter options: 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 1-7/8", 2" and 2 more.
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.
Resources
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Goliath UN Intermediate HSS Bright Straight Flute Tap: 1-1/8"
SKU: A0201212 | Model: C821CB4
Diameter 1-1/8". Goliath UN Intermediate HSS Bright Straight Flute Tap
HSS Bright Finish 8-UN Hand and Machine Intermediate 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.
In almost all thread series, the number of threads per inch decreases as the diameter increases.
It became obvious to engineers using very large bolts on bridges and similar structures that this practice makes no sense for very large bolts.
So for large bolts three series were defined in which all diameters have the same pitch; they are simply lists of standard diameters.
All the bolts in the 8N series had 8 threads per inch, all in the 12N series had 12 threads per inch (used in boilers and for thin nuts on shafts), and in 16N, sixteen threads per inch (used where precise positioning of a big nut is required e.g., for bearing adjusting nuts).
The N constant-pitch series were later replaced by the constant-pitch Unified Thread series, which have the Unified thread form and are designated 4-UN, 8-UN, and so on.
Sometimes, for a particular diameter, the constant-pitch happens to be the same as the pitch in another Unified Thread series, in which case the fasteners are identical.
Intermediate Taps have a lead of four threads and are used in most general purpose applications to cut a thread true to a pre-drilled pilot hole.
Manufactured from HSS this general-purpose tap is designed for use in medium tensile materials and is for hand or general machine use.