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to ISO 8977 type A – hadeless · type B – with head

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Item no.:

 Type A: 521 . . . Material: HWS = High carbon high chrome steel
  Type B: 522 . . .   HSS  = High speed steel
       
  The 4th digit of the item no. Hardness: Material HWS                HRC 60 ± 2
  indicates the material, see from How to order   Material HSS                 HRC 64 ± 2
       

 

   How to order: For die type B
Version: Type A: with cylindrical external diameter,   Drilling diameter      d = 5 mm
  hardened, tempered and ground finished.   External diameter    D = 10 mm
  Type B: with head, hardened, tempered   Total length             L = 25 mm
  and ground finished   High speed steel (HSS):
  Both version are supplied lead in chamfer    
  or relief.   Die ISO 8977 B 5 × 10 × 25
      Item no. 5223.05.10.25

 
d Gradation D D1 d1 L l h
H 8   Type A:n5    0    Max + 0,5   + 0,25
    Type B :m5 - 0,25   0   0
  From 1,0 to 2,4 0,1 5 8 2,8 16 20 25 - 2 5
  From 1,6 to 3,0 6 9 3,5 3
  From 2,0 to 3,5 8 11 4,0 32 4
 From 3,0 to 5,0 10 13 5,8
  From 4,0 to 7,2 13 16 8,0 - 5
  From 6,0 to 8,8 16 19 9,5
  From 7,5 to 11,3 20 24 12,0 8
From 11,0 to 16,6 25 29 17,3
From 15,0 to 20,0 0,5 32 36 20,7
From 18,0 to 27,0 40 44 27,7
From 26,0 to 36,0 50 54 37,0

Note: Ensure correct punch to die clearance.