3/8-20 BSF Bright Merlin Spiral Flute Machine Tap

• HSS
• For general purpose applications
• Helix angle of 30°-35° depending on size
• BSF (British Standard Fine) is a finer pitch series, also with a 55° Thread Form
• Spiral flute taps are designed for blind hole applications and lift chips out of the hole
• Bright Finish for tapping a wide range of materials but best suited for Non-Ferrous materials such as Aluminum
• The untreated surface on this tap gives lower friction and good chip flow for softer materials