Industry News

Fasto supplies industrial fasteners with 3.1 Mill Test Certificates issued by qualified mills, along with batch traceability and standard mechanical testing records when required.
A 3.1 MTC is one of the core documents buyers look for when verifying material compliance. It confirms that the steel used for bolts, nuts, washers, or threaded rods meets the mechanical and chemical requirements of a referenced standard.
Since formats vary by mill, many buyers receive sheets of data that feel inconsistent. This guide explains how to read the key sections and how each part connects to fastener traceability.

Getting structural bolts for an Australian job? If they’re not AS/NZS 1252 compliant, they won’t pass inspection. This standard treats the bolt, nut, and washer as a single, certified system. Miss the details, and you risk delays, rejections, and costly rework. Let’s break down what you actually need to check.

The cool air conditions are very harsh on coastal buildings. The presence of salt in the air, high humidity, and strong winds enhance the rate of corrosion. Minor fasteners are also important — a rusted screw may lead to leaks, roof failure, and reduced life expectancy. Purchasers must understand how coating thickness levels influence the performance of the parts. Fasto roofing screws come with a coating of Class 3 and Class 4, traceable batch numbers, and quality inspections. That makes the supply stable and enables buyers to have confidence in planning their projects.

High-tensile bolts work under stress cycles, vibration and surface wear. In dry, low-humidity environments with large temperature swings, some bolts fail without warning. Hydrogen embrittlement is one of the hidden reasons behind these sudden fractures.
This article looks at how hydrogen enters steel, where it forms during production or service, and what engineers can do to reduce the risk.

When engineers specify stud bolts for high-pressure or high-temperature systems, they usually start with two grades from ASTM A193: B7 and B7M. Both come from alloy steel and both are common in petrochemical and power-generation projects. They look similar on paper, but the way they behave under risk, especially in environments where hydrogen, acids, or process upsets happen, is not the same.
This comparison focuses on the day-to-day decisions engineers actually make rather than textbook definitions. The goal is to explain why a project chooses one grade over the other and what buyers should check before placing an order.

Anyone who works with metal-to-metal fastening knows that heat shows up early in the process. It affects how the tip wears, how the threads hold their shape, and whether the screw finishes the hole cleanly. At Fasto, bimetal self-drilling screws are often recommended because the mixed-metal structure handles heat differently from full stainless versions. The carbon-steel point takes most of the friction, while the stainless upper section stays comparatively cool. This difference often leads to smoother drilling, especially on tougher steel or thicker assemblies.

This article walks through how heat moves through each screw type and why it matters for everyday installation work.

Metal drilling looks simple, but failures often appear before the screw even sets. Heat builds fast, tips lose shape, threads deform, and the junction between the drill point and the shank takes a heavy load. These issues show up more often on tougher substrates like structural steel, machine brackets, and layered metal assemblies.

Fasto supplies bimetal self-drilling screws for buyers who want a more predictable result without moving to high-cost premium options. With a carbon-steel point for penetration and a stainless upper section for durability, the design keeps the drilling stage stable and reduces the failure patterns that usually slow down metal-to-metal work.

Bimetal screws sit in a middle zone between full-stainless and carbon-steel drilling fasteners. They aren’t the cheapest option on the list, but they usually give buyers a more predictable return on cost — especially on structural steel, outdoor frames, and mixed-metal assemblies. The idea is simple: let the carbon-steel point handle the drilling, and let the stainless section take care of long-term durability. When the two metals are bonded well, installers get fewer surprises and fewer failures during work.

Drilling into structural steel puts more stress on a screw than light-gauge panels ever do. The steel is harder, the sections are thicker, and the drilling time is longer. All of this increases the chance of broken tips or snapped shanks. Fasto uses bimetal self-drilling screws for these situations because mixed-metal construction handles heat and torque more predictably. The carbon-steel tip manages the cut, while the stainless-steel upper section stays stable after installation. For buyers working with steel frames, industrial supports, or heavy mounting points, this combination helps avoid the early failures that show up with standard screws.

Drilling into high-strength steel is tricky. The material is tough, heats up fast, and puts a lot of pressure on standard fasteners. Bimetal screws handle these conditions better because they combine a carbon-steel drilling tip with a stainless-steel body. This mix helps the screw start the hole cleanly, keep a steady drilling speed, and stay intact under stress.