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Who owns Unbrako?

Who owns Unbrako?

Deepak Fasteners
Deepak Fasteners is the proud worldwide owner of the Unbrako brand.

What is Unbrako?

Unbrako High-tensile Fasteners Established in 1911, Unbrako is the ultimate authority in high tensile industrial fasteners and remains the socket screw by which all others are measured .

What are Unbrako bolts made from?

UNBRAKO stainless socket screws are made from austenitic stainless steel.

What is ASTM A574?

A574 is a ASTM International specification for steel socket head cap screws. A574 covers quenched and tempered alloy steel hexagon socket-head cap screws, 0.060 through 4″ in diameter where high strength is required.

What are Unbrako screws?

Is a 10.9 Bolt stronger than Grade 8?

Class 10.9 is stronger than class 8.8. It is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8.

What grade are socket head cap screws?

Typical bolts are supplied as grade 5.8, 8.8, or 10.9. Socket cap screws are often available in grade 12.9, meaning it has a UTS of 1200 MPa and will yield at 90% of this (1080 MPa).

How much weight can a M12 bolt hold?

Size Grade 8.8 Grade 10.9
M10 3,370kg 4,810kg
M12 4,890kg 7,000kg
M16 9,100kg 13,000kg
M20 14,700kg 20,300kg

What grade is a A574 bolt?

Similarly, grade 12.9, where as common in metric circles, has as its only ASTM mechanical equivalent, A574.

Is ASTM A574 stainless steel?

ASTM A574 specification covers the requirements for quenched and tempered alloy steel socket-head cap screws. ASTM A574 screws shall be fabricated from steel made to fine grain practice and shall be alloy steel conforming to the chemical composition specified.

What are CSK screws?

Overview of Countersunk Screws Also known as a flat-heat screw, a countersunk screw is a type of screw that’s designed to rest flush with the object or surface in which it’s inserted. They are called “countersunk screws” because they “sink” into objects and surfaces.

What do letters on bolts mean?

The markings can identify the standard to which the bolt was made. For instance, if a bolt head contains three radial lines, then it’s a Grade 5 bolt. If it contains five radial lines, then the bolt is Grade 8.

What is the hardest metric bolt?

The strongest commercial-quality bolt is grade 8, marked by six raised dashes; its medium-carbon alloy steel has been quenched and tempered to achieve a tensile strength of 150,000 psi.

What grade bolt is the strongest?

grade 8
Grade 9 structural bolts, also known as grade 9 hex cap screws, are one the strongest structural bolts that can be used today. While the typical grade 8 bolt has a tensile strength of 150,000 PSI, a grade 9 bolt has a tensile strength of 180,000PSI.

What is the strongest socket head cap screw?

BUMAX supplies the strongest socket head cap fasteners in a variety of dimensions and grades. A socket head cap fastener, or Allen bolt, has a cylindrical head and hexagonal drive hole. Socket head cap fasteners are often used clamping or to fasten machine parts.

What does M mean in bolt sizes?

metric thread
The letter ‘M’ indicates that this bolt uses a metric thread. The number ‘8’ refers to the nominal diameter of the bolt shaft in millimeters. The number 1.0 is the thread pitch of the bolt, which is the distance between threads, in millimeters. And the final figure, 20, is the length in millimeters.

What is stronger grade 8 or ASTM A574?

Common Inch / Imperial SAE Grades: (all values in ksi or 1000 lbs / square inch) Socket Head Cap Screws made from alloy steel are typically manufactured to a higher strength than SAE Grade 8: 180 ksi tensile strength for fasteners up to 1/2 inch, 170 ksi for larger sizes (ASTM A574, p. G-34).

What grade is ASTM A574?

ASTM A574 MECHANICAL PROPERTIES: FULL SIZE SCREWS
Property Less than, or equal to, 0.500″ dia. Greater than 0.500″ dia.
Tensile or Wedge tensile strength, ksi min 180 170
Proof Load (stress), ksi 140 135
Rockwell (HRC) 39 – 45 37 – 45

What is CSK hole?

countersunk holenoun. A hole which is drilled into a surface, so that when a screw is inserted, the screw head is level with the surface.

Established in 1911, Unbrako is the ultimate authority in high tensile industrial fasteners and remains the socket screw by which all others are measured . The NABL ISO/IEC 17025 certified lab facilitates in maintaining consistent high quality.

Why choose Unbrako fasteners?

Download the App today! Unbrako fasteners known for quality, safety and innovation for over 100 years, are now available in 304 and 316 stainless steel AD 2000 Merkblatt WO Certified. These high-tensile fasteners offer excellent corrosion resistance.

What is Unbrako’s tensile strength?

Unbrako tensile specifications are 10,000 psi higher than industry standard – while maintaining the core hardness range. The ultimate in fastener traceability – from its original manufacturing lot, raw material chemistry to performance test results.

What screws are available in Unbrako a2-70?

A complete range of Unbrako stainless steel fasteners including socket head screws, hex head screws and nuts, washers (plain & spring), threaded rod and socket set screws is now available in A2-70, A2-80, A4-70, A4-80, A4-90 and A4-100. This website uses cookies to ensure you get the best user experience.

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