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12-Point Bolt

A 12-point bolt is a high-strength fastener designed for applications in the transportation industry, including engines, transmissions, and suspensions. 12-point bolts are also used in the heavy equipment industry. They feature a 12-spline design with superior gripping surfaces versus hex head bolts. 12-Point bolts are commonly made with alloy steel.

Sizing Ranges

Diameters range from 5/16″ to 1″ with lengths up to 12″

Types

12-point Bolts are manufactured in grades 8, 9, 10.9, and 12.9 for high strength applications

PlatingApplications

Finishes include black oxide, zinc, yellow zinc, phosphate and oil, and cadmium

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Applications

12-point bolts are used in mining, agricultural, and heavy equipment industries as well as automotive and racing applications with high-performance engines. 12-point bolts are also used in structural applications where high-clamp loads like suspension systems are constructed.
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Advantages
• 12-point bolts have a smaller head diameter than standard hex head bolts which provides easier installation in tight spaces or bored holes
• Constructed from alloy steel, 12-point bolts are used in high-stress and high-load-bearing structures and engines

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