Union Butterfield UTD 1010458

Union Butterfield STI Tap, Straight Flute, Series: 1572, Measurement System: Imperial, 5/16-18 Thread, UNC Thread Standard, 1-1/4 in Thread Length, 2-15/16 in Overall Length, 4 Flutes, Plug Chamfer, Right Hand Cutting Direction, Class of Fit: 3B/H3, 0.381 in Shank Diameter, F Tap Drill, 0.286 in Square, HSS, Bright

• Features

• Designed for use in aluminum, magnesium, and other nonferrous materials where taps of this type are most commonly used
• Taps suitable for other materials can be furnished on request
• STI taps are dimensionally oversize and utilize a larger tap drill size so that the thread they produce will accept a helical coil wire screw thread insert of the same nominal size and pitch
• For a particular size and pitch the lower H-Limit number is suggested for class 2B and 3B threads, while the higher H-Limit is suggested for class 2B
• Through or blind hole

Specifications

Additional Information

Documents

• Catalog