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M12X1.25 JIS 4-Mark Hex 17mm WAF - Steel JIS B-1180
4-Mark (4.6) bolts were used in older OEM vehicles, but only for light-duty, non-structural parts, not for high-performance or structural applications. Sufficient for assemblies that don’t carry significant loads or don’t face dynamic stress.
Smaller Across-Flats (WAF) 17mm reduced wrench size wrench size, commonly used in Japanese vehicles and equipment (Toyota, Honda, Nissan, etc.).
Automotive Restoration
4-Mark bolts are popular for restoring vehicles to factory-original condition as this original head-marking is legacy, no longer industry standard.
Commonly used in Japanese vehicles and equipment (Toyota, Honda, Nissan, etc.).
Applications: dashboard brackets and supports, glove box hinges and latches, heater core and blower motor housing, radio mounts and center console brackets, fender liners and splash shields, inner fender brackets, taillight and headlight mounting brackets, fuse box brackets and cover panels, small under-dash brackets, windshield washer reservoir mounts.
Material: Steel Class 4.6
Low-strength carbon steel (400 MPa tensile)
Zinc electroplating provides corrosion resistance, RoHS compliant for this product group. Yellow Zinc is not RoHs compliant for this product group.
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