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HELP_VARIABLE
BNARTNR
Identification
BNNORM1
DIN 7985 A
BNNORM2
~ISO 7045
BNMAT
Material
Steel 4.8
BNSURFACE
Surface
zinc plated blue
D
Nominal thread diameter
mm
D3
Thread core diameter
mm
P
Threaded pitch
mm
L
Nominal length
mm
A
Distance from the last full form thread to the bearing face
mm
B
Thread length
mm
DA
max.
mm
DK
Head diameter
mm
K
Head height
mm
R
Transition radius under head
mm
RF
Radius of curvature of the lens head ~
mm
V
~
mm
X
Thread rudiment
mm
M
Wing diameter of cross recesses
mm
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