Goliath Threading Tools 1.1/2″ x 11.5 NPT Taper HSS Tap – Goliath

Description

1.1/2″ x 11.5 NPT Taper HSS Tap – Goliath
HSS Bright Finish NPT Hand and Machine Taper Tap.
Pipe taps are much shorter than a similar size of regular hand tap, but the design features are the same.
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.
Tapered Pipe Taps are used for tapered threading by hand or machine.
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″.
Taper Taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes.
Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.
Category: Goliath Threading Tools, Taps Hand & Machine, HSS Pipe Taps and Reamers, NPT for Tapered Threads
Drill Diameter (mm): 44
Overall Length (mm): 125
Pitch (mm): 11?
Lead: Taper