Goliath 1-5/8" x 8 TPI UN 3" HSS Circular Split Button Die - F8123CG
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 HSS Circular Split Button Die, available in 8 diameter options: 1-1/8", 1-1/4", 1-3/8", 1-1/2", 1-5/8", 1-3/4", 1-7/8", 2".
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 HSS Circular Split Button Die: 1-5/8"
SKU: A0200525 | Model: F8123CG
Diameter 1-5/8". Goliath UN HSS Circular Split Button Die
HSS Circular Split Button Die
HSS Button Dies (also known as Adjustable Dies) are designed for cutting external threads.
They are used for threading rods, bolts, and studs, either by hand using a die stock, or by machine using a floating die holder.
They also can be used to cut smaller or larger, than factory setting, by utilising the adjusting screws in the die holder.
Dies are manufactured with a thread chamfer to aid starting.
M2-HSS material provides increased wear resistance and superior thread accuracy.
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.