Fasteners are devices that mechanically join two or more objects together, typically in non-permanent joints. Fasteners can be made out of many metals or alloys including stainless steel, titanium, silicon bronze, brass, copper, nickel, aluminum, and zinc plated steel. The different in fasteners comes from not only want they’re made out of, but also their drive, head shape, and thread.
Common types of drives include phillips which looks like a cross, slotted which is a straight line, a socket which has six equal sides, and square which has 4 equal sides. It is possible to create a fastener with an unconventional drive that can only be tightened or loosened with a specialty tool to prevent anyone from tampering or otherwise vandalising the fastener.
Common types of heads include flat, dome, button, oval, and pan. Depending on the head, a fastener can sit shallow or deep and may be flush or stick out of the surface it sits inside.
Threads can be coarse or fine and the difference come in the pitch. Coarse threaded fasteners have fewer threads per distance along the fastener, meaning they have a larger pitch. Fine threaded fasteners are the opposite with a smaller pitch, meaning more threads per distance of the fastener. Coarse threads are more durable and less likely to strip. Fine threads are stronger and less likely to shake loose.
Fasteners are classified by their drive, head, thread, and also whether they are an internal receiving part or external part. Male fasteners have external parts that can fit into female fasteners. Examples of male fasteners include screws, bolts, rods, rivets, pins, sockets, and nails. Female fasteners include nuts and washers
If a fastener becomes stripped and therefore unable to perform it’s job, it may be possible to restore the part with a tap or die. Dies help to reform male fasteners while taps, which are taped, can restore female fasteners.
The strength of the fasteners depends not only on the material it is made out of but also what finishing has been applied. The finish provides a protective layer on the fasteners that helps prevent corrosion. Popular finishes include black oxide, aluminum hot dip galvanizing, zinc or chrome plating, and blue climaseal.
The fastening industry employs over 40,000 workers and has reaches in many industries including the military, automobiles, agricultural machines, appliances, and infrastructure, including telecommunications, roadways, transit, and water supply.
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The Federal Group USA is “The Leader in Global Manufacturing, Sourcing and Engineering Custom Fasteners since 1980″.
Custom fasteners are standard at The Federal Group USA. We are a quality and well trusted Automotive Fastener Manufacturer. So, whatever your application may require, The Federal Group USA will produce it competitively and to your comprehensive quality expectations. We will meet your application requirements with the right combination of heads, threads and drive specifications to ensure that your fastener will perform the way it was designed. We manufacture in both ferrous and non-ferrous materials. The Federal Group USA Engineering support is available to assist in your fastener selection, design and testing.
Fastener Materials can be numerous and include many metals or alloys such as stainless steel, titanium, silicon bronze, brass, copper, nickel, aluminum, and zinc plated steel.
Common types of drives include Phillips, Slotted, Socket/Hex (internal or external), Square (internal or external), and Star/Torx (internal and external). Custom Designed drives can also be manufactured to fit unique applications.
Common head types are Flat, Dome, Button, Oval and Pan. Depending on the head, a fastener can sit shallow or deep and may be flush or stick out of the surface it sits inside.
Custom Bolts and Screws – Most common method of forming these is through the Cold heading process. The threads on these can be formed either by cutting the threads on a lathe, cutting threads using a screw machine, or roll forming which is the process of squeezing the shaft, rolling it though a die with pressure to from the threads, this is the most consistent and accurate process of manufacturing threads.
Custom Rivets – These are also formed using the cold heading process. Rivets can be made from Steel, Aluminum and even Brass. Care must be taken in the grade of the metal chosen for the application. Too hard of a grade and the rivet will not be able to be flattened in the tool to properly attach the two parts. Too soft and the rivet may stress fracture or even pull through the hole when from the movement of the two parts.
The strength of the fasteners depends not only on the material that is used to manufacture, but also what finishing has been applied. The finish provides a protective layer on the fasteners that helps prevent corrosion. Popular finishes include black oxide, aluminum hot dip galvanizing, zinc or chrome plating, as well as other custom plating.
The fastening industry reaches into many other industries including military, automotive, agricultural, appliance, and infrastructure including telecommunications, roadways, transit, and utilities.