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Bossard Catalog
Description
BN 21 - Hex socket flat countersunk head screws fully threaded (DIN 7991; ~ISO 10642), cl. 010.9 / 10.9, zinc plated blue
Bill of material
BN 21 8046883 hex socket flat countersunk head screw M5x16
BNARTNR
Identification
BNNORM1
DIN 7991
BNNORM2
~ISO 10642
BNMAT
Material
Steel 010.9 / 10.9
BNSURFACE
Surface
zinc plated blue
D
Nominal thread diameter
mm
D3
Thread 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
AL
Countersunk head angle +2 / 0
mm
DK
Head diameter max.
mm
DS
Diameter of the unthreaded shank max.
mm
K
Head height max.
mm
R
Transition radius under head min.
mm
S
Keys wide nominal
mm
T
Depth of the driving feature max.
mm
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