Century® Carbon Steel Plug Tap 1/4-28 National Fine Thread

Specifications:

• 1/4 - 28 TPI
• Use drill size 3; 7/32 inch see item 132171
• Heat treated and tempered to file hard threads and extended life
• Plug style tap is commonly used with 3 to 5 threads chamfered
• Use cutting oil with cutting threads in metal; see item 132280