NUMBERING SYSTEM

    * Tap Material & Surface Treatment

      HSS-EX + Steam Homo     --- 1      HSS-PM + Steam Homo     --- Q

      HSS-EX + Bright Finish      --- 2      HSS-PM + Bright Finish      --- R

      HSS-EX + TiN Coated        --- 3      HSS-PM + TiN Coated        --- T

    * Size 

      M3 × 0.5 --- 20      M8 × 1.25  --- 36

      M4 × 0.7 --- 24      M10 × 1.5  --- 42

      M5 × 0.8 --- 28      M12 × 1.75 --- 50

      M6 × 1.0 --- 31      M14 × 2.0  --- 54

    * Tolerance 

      YH2 --- 2     GH2 --- 2

      YH3 --- 3     GH3 --- 3

      YH4 --- 4     GH4 --- 4