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Company
Bossard Catalog
Description
BN 20240 - Hex socket head cap screws partially threaded (DIN 912, ISO 4762), cl. 8.8, zinc plated with thicklayer passivation
Bill of material
BN 20240 3370941 hex socket head cap screw M8x40
BNARTNR
Identification
BNNORM1
DIN 912
BNNORM2
ISO 4762
BNMAT
Material
Steel 8.8
BNSURFACE
Surface
zinc plated with thicklayer passivation
D
Nominal thread diameter
mm
D3
Nominal core diameter
mm
P
Threaded pitch
mm
L
Nominal length
mm
B
Thread length
mm
LS
Shank length min.
mm
LG
Distance from the last full form thread to the bearing face (shank length of bolt) max.
mm
DK
Head diameter max.
mm
DA
Inner diameter of Auflageflaeche max.
mm
DS
Diameter of the unthreaded shank max.
mm
E
Reduction in diameter at the Hex min.
mm
F
Distance max.
mm
K
Head height max.
mm
R
Transition radius under head min.
mm
S
Width across flat
mm
T
Depth of the driving feature min.
mm
V
Chamfer max.
mm
DW
Diameter of the bearing face min.
mm
W
Residual head height min.
mm
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