What is a high tensile fastener?
High Tensile Fasteners are used in extensive stress applications. The high tensile strength is needed for these fasteners to hold on components under high strength.
What are the properties of screws?
Hardness determined at the end of a fastener shall be 250 HV, 238 HB or 99,5 HRB maximum. Surface hardness shall not be more than 30 Vickers points above the measured core hardness of the fastener when determination of both surface hardness and core hardness are carried out with HV 0,3.
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.
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. Let’s take a look at the markings you would find on some of the most common SAE bolts.
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 are the properties of high tensile steel?
To increase its strength and durability, high tensile steel contains additional alloys like silicon, manganese, chromium and nickel. The high tensile property is responsible for steel’s tension resistance, high yield and fatigue strengths at certain stress levels.
How do you classify screws?
General. Fasteners are identified by four or five attributes; Type, Material, Diameter, Length, and Thread Pitch or Count (machine thread fasteners only).
Is 8.8 high tensile?
High tensile steel bolts Grade 8.8 high tensile steel is often referred to as the structural grade for bolts. It is the most common form of high tensile material and is usually stocked in plain finish or zinc. It can be plated in many other coatings.
Is a Grade 5 bolt high tensile?
The tensile strength can easily be converted between both types of thread pitch by recalling that a Grade 2 bolt possesses the same tensile strength as a Class 4.6 bolt, a Grade 5 bolt possessing the same tensile strength as a Class 8.8 bolt, a Grade 8 bolt possesses the same tensile strength as a Class 10.9 bolt and a …
Are stainless bolts stronger than high tensile?
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.
