Union Butterfield® 1585 Relieved Spiral Point Tap, Imperial, 1/2-13, UNC Thread, 3 Flutes, 3B, Plug, HSS, Bright

• 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
• Bright finish flutes improve chip flow in soft or non-ferrous materials
• 7/16 in square length
• 27/64 in tap drill size
• 0.275 in square size
• H3 thread limit

Union Butterfield® Spiral Point Tap| Relieved| Series: 1585| Measurement System Imperial| 1/2-13| UNC Thread Standard| Plug Chamfer| 3 Flutes| HSS| Bright| Class of Fit: 3B| Right Hand Cutting| 1-21/32 in Thread Length| 3-3/8 in Overall Length| 0.367 in Shank Dia