1-1/2″ X 11.5 NPT TAPER HSS TAP

About this item:

• 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.
• 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.