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Hex Head Flange Bolts ISO 1665 (DIN 6921) M16 in Bright Zinc Plated (BZP) Class 8 high tensile steel

The DIN 6721 flange bolt is a hexagon headed bolt or screw incorporating a flange, negating the need for a washer. Flange bolts are a more attractive alternative to their DIN 931 and DIN 933 hex driven counterparts. Typically used where The flange offers protection for the bolted component where the driving tool may otherwise scratch it's surface. Generally manufactured with a full thread, though occasionally some stock may include a partially threaded shank.
Hex Head Flange Bolts ISO 1665 (DIN 6921) in BZP-8.8 image
technical drawing of Hex Head Flange Bolts ISO 1665 (DIN 6921)
Technical Summary
d nominal diameter M16
b minimum thread length 38
k max. maximum head height 14.4
s drive size 21
dc flange diameter 35.0
e width across corners 23.15
Standard EN 1665 (DIN 6921)
Material Bright Zinc Plated (BZP) Class 8 high tensile steel
all dimensions in millimetres (mm)
datasheet
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technical drawing of Hex Head Flange Bolts ISO 1665 (DIN 6921)
Technical Summary
d nominal diameter M16
b minimum thread length 38
k max. maximum head height 14.4
s drive size 21
dc flange diameter 35.0
e width across corners 23.15
Standard EN 1665 (DIN 6921)
Material Bright Zinc Plated (BZP) Class 8 high tensile steel
all dimensions in millimetres (mm)
datasheet