A fastener is a hardware device that mechanically joins or affixes two or more objects together. In general, fasteners are used to create non-permanent joints; that is, joints that can be removed or dismantled without damaging the joining components. Welding is an example of creating permanent joints. There are three major steel fasteners used in industries: stainless steel, carbon steel, and alloy steel. The major grade used in stainless steel fasteners: 200 series, 300 series, and 400 series.

Other alternative methods of joining materials include: crimping, welding, soldering, brazing, taping, gluing, cementing, or the use of other adhesives. The use of force may also be used, such as with magnets, vacuum (like suction cups), or even friction (like sticky pads). Some types of woodworking joints make use of separate internal reinforcements, such as dowels or biscuits, which in a sense can be considered fasteners within the scope of the joint system, although on their own they are not general purpose fasteners.

Industrial fastener materials

There are three major steel fasteners used in industries: stainless steel, carbon steel, and alloy steel. The major grade used in stainless steel fasteners: 200 series, 300 series, and 400 series. Titanium, aluminum, and various alloys are also common materials of construction for metal fasteners. In many cases, special coatings or plating may be applied to metal fasteners to improve their performance characteristics by, for example, enhancing corrosion resistance. Common coatings/platings include zinc, chrome, and hot dip galvanizing.

When choosing a fastener for a given application, it is important to know the specifics of that application to help select the proper material for the intended use. Factors that should be considered include:

  • Accessibility
  • Environment, including temperature, water exposure, and potentially corrosive elements
  • Installation process
  • Materials to be joined
  • Reusability
  • Weight restrictions

And there are 5 types of fastners that MSI Supply provides. They are:

  • Hex Bolts
  • Stud Bolts
  • Nuts
  • Washers
  • Screws

ASTM Fastener Specification

ASTM's fastener standards are instrumental in specifying, testing, and evaluating the material, dimensional, mechanical, and metallurgical properties of the various forms of hardware fasteners. These fasteners are used to mechanically join or affix other hardware objects together, and come in many forms which include rivets, nuts, bolts, studs, screws, washers, eyebolts, nails, and threaded fasteners.

These fastener standards allow hardware product manufacturers, as well as the end-users of such products, to examine and assess fasteners to ensure their strength and quality towards safe utilization. The American Society for Testing and Materials is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services.

About Us

MSI Supply is a Houston, TX based full-line distributor of pipe, valves, fittings, flanges, stud bolts, gaskets, and fasteners, serving price-conscious customers who desire quick deliveries and consolidation of their material needs. With a large inventory of carbon and stainless pipe, cast and forged steel valves, tubing, and the thousands of fittings and fasteners required to put it all together, MSI can meet the needs of virtually any piping, fastener, or instrumentation project.

Also MSI is a full-line distributor of gate valves, globe valves, and check valves, with a large portfolio of: carbon steel, stainless steel, and exotic alloy. End connections for each gate valve, globe valve, and check valve include: flanged, threaded, and socket weld. With sizes ranging from 1/4” to 36", and pressure classes ranging from 150# - 2500#, MSI can supply the gate valves, globe valves, and check valves to meet the requirements of virtually any piping project.