Specification corresponding with standard blanks(for Japanese market)

Material Symbols HSS:○ HSS-Co:● HSS-P:◎

Main size designation and specification
① metric② unified③ whitworth④ sewing screw⑤STI (metric)⑥STI (unified)
M22×2.5 M22×2 M22×1.57/8-9UNC 7/8-12UN 7/8-14UNF 7/8-16UN 7/8-20UNEFW7/8-9STIM18×2.5 STIM20×1.5STI3/4-10UNC STI3/4-16UNF
M22×17/8-28UN 7/8-32UN
M22×0.5
M22×2.5 M22×2 M22×1.5
M23×2 M23×1.5STIM20×2
M23×1
M23×2 M23×1.5
M24×3 M24×2 M24×1.5STIM20×2.5 STIM22×1.5
M24×1.25 M24×1
M24×0.5
M24×3 M24×2
M24×1.5
M25×3 M25×2 M25×1.51-8UNC 1-12UNF 1-16UN 1-20UNEFW1-8STIM22×2.5STI7/8-14UNF
M25×11-28UN 1-32UN
M25×0.5
M25×3 M25×2 M25×1.5
M26×3 M26×2 M26×1.5STIM24×1.5STI7/8-9UNC
M26×1
M26×0.5
M26×3 M26×2
M26×1.5
M27×3
M27×2 M27×1.5 M27×1STIM24×2
  • Corresponding pitches meet with the pitches of other kinds.
  • Concerning Hand of threads, both right and left are applicable in the same blank.
  • Concerning the kind of taps, SP, PO, HT, ROLL are applicable in the same blank.