Page 249 - Fanar

Technical Information i

6. DIES

6.1. Die construction elements

w
z
γ1
n

A d2
d1

s

h1

d1 - nominal thread diameter
d2 - outside diameter Detail A
h1 - die thickness γ2
κ - chamfer angle
γ1- rake angle
γ2 - spiral face inclination K
w - chip hole
n - chamfer
s - spiral face
z - hole for fixing screw

6.2. Dimension standards

Dimension standards assign proper series of dies outer dimensions (diameters, thickness) to nominal standards
as well as determine the dimensions connected with dies fixing in the holder (position, size of holes for fixing
screws and V-grooves).

Symbol Standards Destination

EN 22 568 Round dies for metric coarse M and MF fine threads, UNC, UNF,
(in the past DIN 223)
DIN BSW, BSF as well as other threads, excluding the
PN-92/M-58070 pipe threads G and R
ISO 2568
EN 24 231
(in the past DIN 5158)
DIN Round dies for pipe threads G
PN-92/M-58161
ISO 4231
EN 24 230
(in the past DIN 5159)
DIN Round dies for tapered pipe threads R
PN-92/M-58160
ISO 4230

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