Automotive fasteners material selection and safety measures

Automotive fasteners material selection and safety measures

Automotive fasteners include a variety of loose parts fastening connections to become the vehicle's various standard and non-standard fastening elements, bolts, screws, etc., with the help of threaded fastening connections in the main body.

The number of fasteners accounts for the number of parts of the car far more than any other kind of part. Although car fasteners are small, their safety is of great significance, and the manufacture and selection of their relationship to the safety of automobile driving should be highly concerning.

Alloy Steel Button Head Hex Drive Screws: Made from alloy steel, these screws are nearly twice as strong as stainless steel button head screws. Length is measured from under the head.

Black-oxide alloy steel screws are mildly corrosion-resistant in dry environments.

Zinc-plated alloy steel screws resist corrosion in wet environments.

Titanium Button Head Hex Drive Screws: Known for their high strength-to-weight ratio, these titanium screws are as strong as alloy steel and about 40% lighter. They stand up to salt water, acids, and chemicals. Length is measured from under the head.

18-8 Stainless Steel Pan Head Phillips Screws:18-8 stainless steel pan head screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head; for partially threaded screws, thread length may vary from the minimum thread length published to fully threaded.

Passivated stainless steel screws provide added protection against oxidation and corrosion.

Chrome-plated stainless steel screws have a decorative, mirror-like finish.

PTFE-coated stainless steel screws won't stick or bind as you thread them into a hole.

Black-oxide stainless steel screws have a matte-black finish.

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The automobile fasteners are vitally related to the safety of automobile driving.

Fasteners refer to two or more components that will be fastened to become whole when used in a class of mechanical parts of the general term. Fasteners are used to fasten connections and apply a wide range of essential spare parts. You can see various fasteners in machinery, vehicles, ships, railroads, bridges, buildings, structures, tools, instruments, meters, and daily necessities. Its application is extensive, with various specifications, performance, and use of different, almost covering the people's livelihood and industrial production in various fields, and has a vast market demand. Because it has an irreplaceable, essential position in the industrial system, it is figuratively called "the rice of industry."

An essential difference between automotive fasteners and other automotive parts is that they contain hundreds of thousands of different functional varieties and are used in cars for almost all parts of various importance. That is, automotive fasteners are the sum of many varieties and specifications of automotive fasteners with highly different degrees of importance.

Automotive fasteners are critical. Ignoring the value of small fasteners may lead to hundreds or even tens of thousands of times the loss's value. Therefore, evaluating their importance is necessary to differentiate control from management.

The primary forms of automotive fastener failure due to poor quality

The importance of automotive fasteners is generally divided into three kinds.

(1)Security fasteners, referred to as "security fasteners" or "security parts," refers to the failure of the fastener may lead to fatal vehicle failure fasteners;

(2)Critical fasteners, or "critical parts" for short, are fasteners whose failure could result in a severe vehicle failure;

(3)General fasteners, also known as "general parts," refer to fastener failure, which may only lead to the fastener's general or minor vehicle failure.

Functional failure of fasteners refers to the complete loss of specified function in service. Vehicle failures that occur during long-term operation or that cause minor failures to evolve into severe or even fatal failures are often caused by the inability of automotive fasteners due to poor quality.