VOLKEL STI Short Machine Tap ISO 529 Form D HSS-G 

Application:

for general use

• non abrasive material up to 900 N/mm²

• unalloyed and low alloyed steel

• for thread cutting by hand and machine

• for through and blind holes

  Type of thread	Unified Fine Thread
  Standard	ISO 529
  Form	Form D
  Material	HSS-G
  Tolerance	3B
  Size	UNF 1/4 x 28
  Overall length (L1)	69 mm
  Thread length (L2)	19 mm
  Core hole diameter (D1)	6.6 mm
  Shank diameter (D2)	8.0 mm
  Diameter (B)	7.5 mm
  Drive connector	6.3 mm