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Square washers are square in shape and may be flat on both sides or flat on one side and beveled on one side. Often used with square head bolts, square washers prevent pull through and provide a larger surface area and greater hold than standard round flat washers.
The hexagonal flange concrete self-tapping cutting anchor bolt can be used for anchoring concrete and external wall structural parts.
Hex serrated flange screw / Hexagonal bolts with flange Hexagon flange bolt DIN6921 steel zinc-plated 8.8 Kramp
DIN 912 Hexagon Socket Head Cap Screws
DIN 912 ISO 4762 ANSI B18.3.1M Grade: 4.8, 8.8, 10.9 and 12.9.
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