Goliath Threading Tools 1.1/2″ x 11.5 NPT HSS Die Nut – Goliath

Description

1.1/2″ x 11.5 NPT HSS Die Nut – Goliath
Hexagonal HSS Die Nut for External Threads
High Speed Steel (HSS) Die Nuts
Goliath solid High Speed Steel (HSS) Die Nuts are used for cutting of new male threads as well as extending / cleaning / resizing of existing threads where a button die is not suited due to work space restrictions and / or on site thread accessibility.
HSS Die Nuts have a vastly longer tool life than Carbon dies as well as 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, Die Nuts, NPT
Pitch (tpi): 111/2