Union Butterfield® TN1585 Relieved Spiral Point Tap, Imperial, 5/16-18, UNC Thread, 3 Flutes, 3B, Plug, HSS, TiN Coated

• Spiral point taps are used to solve the problem of tap breakage in through hole tapping in a wide variety of materials
• The angular flutes in the cutting face propel the chips ahead of the cutting zone, thus reducing loading and clogging in the flutes
• The 1585 style features eccentrically relieved threads with full pitch diameter relief
• These taps are extremely free cutting, resulting in longer tool life
• The use of rigid tapping equipment is highly recommended with this style of tap
• TiN coating increases surface hardness and improves tool life
• 3/8 in square length
• 0.238 in square size
• H3 thread limit

Union Butterfield® Spiral Point Tap| Relieved| Series: TN1585| Measurement System Imperial| 5/16-18| UNC Thread Standard| Plug Chamfer| 3 Flutes| HSS| TiN Coated| Class of Fit: 3B| Right Hand Cutting| 1-1/8 in Thread Length| 2-23/32 in Overall Length| 0.318 in Shank Dia