Goliath Threading Tools 1 1/2″ x 11.5 NPT 3″ HSS Button Die – Goliath

Description

1 1/2″ x 11.5 NPT 3″ HSS Button Die – Goliath
HSS CIRCULAR SOLID 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.
Dies are manufactured with a thread chamfer to aid starting.
M2-HSS material provides increased wear resistance and superior thread accuracy.
National Pipe Tapered (NPT) is a US standard for tapered threads used to join pipes and fittings.
ANSI/ASME standard B1.20.1 covers threads of 60º form with flat crests and roots.
The taper on NPT threads allows them to form a seal when torqued as the flanks of the threads compress against each other.
However a clearance remains between the crests and roots of the threads, resulting in a leakage around this spiral.
This means that NPT fittings must be made leak free with the aid of thread seal tape or a thread sealant compound.
For each 12″ increase in distance from the end, the diameter increases by 3/4″.
Category: Goliath Threading Tools, Button Dies, NPT, 3″ Button Die
Pitch (tpi): 11 1/2