Table of Contents
What is an Unbrako screw?
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. UNBRAKO stainless screws offer excellent resistance to rust and corrosion from acids, organic substances, salt solutions and atmospheres.
Who owns Unbrako?
Deepak Fasteners
Deepak Fasteners is the proud worldwide owner of the Unbrako brand.
How do you measure the length of a socket head cap screw?
Length is measured from the point at which the head sits flat with the surface, to the tip of the threads. Hex, pan, truss, button, socket cap, and round head screws are measured from right under the head to the end of the threads. Flat head screws are measured from the top of the head to the tip of the threads.
Are socket head cap screws stronger than grade 8?
Socket head cap screws are not grade designated as are hex head cap screws. A standard inch series socket head cap screw is 20% stronger than a Grade 8 hex head cap screw and 50% stronger than a Grade 5 hex cap screw.
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 does ASTM A574 mean?
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.
How do you measure a flat head screw?
What kind of screws does Unbrako make?
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.
What makes Unbrako different?
Unbrako tensile specifications are 10,000 psi higher than industry standard – while maintaining the core hardness range. E-CODE ™ Head Marking. The ultimate in fastener traceability – from its original manufacturing lot, raw material chemistry to performance test results.
Why choose Unbrako 304 and 316 fasteners?
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.