What does high tensile bolt mean?

[′hī ‚ten·səl ′bōlt] (engineering) A bolt that is adjusted to a carefully controlled tension by means of a calibrated torsion wrench; used in place of a rivet. Also known as high-tension bolt.

What are high tensile bolts used for?

We use high tensile bolts on parts where require high strength to hold components together firmly. For instance, the linkages of a suspension system, or to hold a brake caliper to the knuckles.

Are high tensile bolts stronger?

High Tensile is strongest under tension – ie when it is bolted tight, it will clamp your bar to your chassis. Whether it is stronger for shearing (sideways) forces depends on the grade of the HT vs the grade of stainless.

What is high tensile strength bolt?

For fasteners and fixings, high tensile steel is some of the best material on offer – and can be found in a number of homes and auto manufacturing. Screws and bolts made from high tensile steel can withstand high levels of strain without losing their strength or structure.

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How can you tell if a bolt is high tensile?

They both use numbers to grade their bolts – the higher the number, the higher the tensile strength. For instance, the SAE system covers diameters of up to 1 ½ inch, and a grade 8 would have a higher tensile strength than a grade 5.

Are stainless steel bolts stronger than high tensile bolts?

Stainless steel fasteners available on the Australian market in the main are equal to or higher in tensile strength than the carbon and low alloy steel fasteners commercially used, and are higher strength than most other corrosion resistant fasteners.

What’s the strongest grade of bolt?

Commercial-grade 8 bolts are the strongest option available. They’re made from medium carbon alloy steel and have markings that include six raised dashes. The psi of the bolt is 150,000, meaning that it can withstand great deals of pressure because of the way it was quenched and tempered.

How strong is a grade 12.9 bolt?

The minimum ultimate tensile strength of the Grade 12.9 Metric Hex Head Bolts is about 1242 Mpa or 180,000 PSI, making them the highest grade of bolts produced.In fact, the Grade 12.9 Nuts is known for their high tensile strength.

Is Grade 8 or 12.9 stronger?

Special markings on screw heads and nuts identify the fastener’s grade. Replace a graded fastener with same or higher grade (don’t replace a Grade 8 fastener with a Grade 5 or 2).

Table 1.

Grade/Class Strength
Metric Class 12.9 The highest metric class for strength, it exceeds Grade 8.

What are 12.9 bolts used for?

The Grade 12.9 Hex Head Bolts as well as other types of bolts are used in some of the high tensile applications such as the engine parts, motor casings and others.

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Is stainless steel as strong as high tensile steel?

When compared with mild steels, stainless steels tend to have higher tensile strength. The duplex stainless steels have higher tensile strengths than austenitic steels. The highest tensile strengths are seen in the martensitic (431) and precipitation hardening grades (17-4 PH).

Are stainless bolts stronger than Grade 8?

Stainless steel bolts are rated for corrosion resistance. Bolt strength is rated in PSI (pounds per square inch). A stainless steel bolt has the same PSI rating as a grade 5 bolt (125,000 PSI). A grade 8 bolt has a stronger rating with a PSI of 150,000.

Is high tensile steel strong?

Hi-Tensile steel is an alloy made with carbon, which gives it a strong resistance to being pulled apart, making it resistant to bending and breaking. It is a very durable and tough material made for day-to-day use. … Hi-Tensile is not as strong as chromoly, but is a cost efficient alternative.

What does 8.8 on a bolt mean?

A property class (PC) is the metric equivalent of a grade in inch series terminology. … So, in English, a PC 8.8 bolt is a bolt with a nominal tensile strength of 800 MPa and a nominal yield strength that is 80% of the bolt’s nominal tensile strength, or 640 MPa.

Is there a grade 10 bolt?

Class 10. This is a metric nut grading similar to the SAE grade 8 classification, which is used in conjunction with Class 10.9 bolts. This strength of nut is used in automotive, and structural industries, as well as in high temp applications.

How strong is a 4.8 bolt?

Metric steel bolts, screws and studs – proof and tensile strength

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Property Class Size Range (mm) Minimum Tensile Strength (106 Pa)
4.6 M5 – M36 400
4.8 M1.6 – M16 420
5.8 M5 – M24 520
8.8 M1.6 – M36 830