Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading blind holes and have 2 to 2-1/2 threads. Oxide, also known as black oxide or steam oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece.
Lot of 5 pieces brand new in original OSG packaging Modified bottoming chamfers are similar to bottoming chamfers, but they are longer and have more teeth. They are used for threading blind holes and have 2 to 2-1/2 threads. Oxide, also known as black oxide or steam oxide, is a surface treatment that prevents chip building, galling and welding on the workpiece.
1/2-20 STI NF HIGH SPEED STEEL STRAIGHT FLUTE GA H3 4FLUTE BOTT HELICOIL TAP Size 1/2-20 STI Tap 4 Flute tap with a thread limit of H3 G A Oversize Made in USA H3 = Basic Plus .0010 to Plus .0015 Bottoming Chamfer Material is High Speed Steel 4 Taps All Together Brand New Taps. Still in plastic holders
3/8-24 STI SPIRAL FLUTE TAP GH3 3FLUTE BOTTOM HSS Size is 3/8-24 and it is a STI Tap, High Speed Steel Tap. Its a 3 flute spiral flute tap. The Thread limit is a H3 and the thread and flute spiral is a right hand directional movement.
This is a brand new and unused 3 piece set of taps from Greenfield . All made from hss and manufactured in the US. The 3 taps consist of the starter ( taper tap ) the intermediate tap and finally the finishing or bottoming ( plug tap ) 3 sets are available .......
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