Serrated Hex Flange Bolts
The grade 8 steel hex bolt has a zinc plated finish, has a serrated flange hex head with an external hex drive, and meets Industrial Fasteners Institute IFI 111 and Society of Automotive Engineers SAE J429 specifications. The flange hex head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The serrated flange acts like a washer to increase the fastener's bearing surface and distribute the clamping force over a larger area, providing a grip that resists loosening.
The grade 8 steel hex bolt has a zinc plated finish, has a serrated flange hex head with an external hex drive, and meets Industrial Fasteners Institute IFI 111 and Society of Automotive Engineers SAE J429 specifications. The flange hex head has six flat sides that a wrench can grip to turn from the side, enabling use when there is no space above the head for a screwdriver. The serrated flange acts like a washer to increase the fastener's bearing surface and distribute the clamping force over a larger area, providing a grip that resists loosening.
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