UNC 5/16" 18TPI HSSG Tap Set

Set of 3 HSS Ground taps

For general use on non abrasive materials up to 900 N/mm2 unalloyed and low alloyed steel, for through and blind holes, for thread cutting by hand or machine.

• 1 x Plug Tap
• 1 x Second Tap
• 1 x Taper Tap
• HSS Ground

Taper Tap

• A Taper tap has quite a lot of taper to help it ease into cutting threads gradually.   Typically, the first 8 to 10 threads are tapered. 

Second Tap

• Second Taps are in between Plug and Taper Taps because they have 3-5 threads tapered, which is more than a Plug Tap and less than a Taper Tap.

Plug Tap

• A Plug tap has almost no taper at the end because it is designed to thread all the way to the bottom of its reach.  Only 1 to 1.5 threads will be tapered.
• Plug Taps are useful for threading blind holes.  It’s desirable to thread most of the hole with a Taper or Second Tap first, and then finish the bottom of the hole with a Plug Tap.

• SKU UNC 5/16" 18TPI HSSG Tap Set