PMI (Positive Material Identification) testing is the analysis of materials to determine the chemical composition of a metal or alloy at particular (usually multiple) steps of alloy manufacturing or in-process alloy installation. Knowing the exact composition and grade of an alloy enables suppliers, plant workers, and other responsible parties in the chain of custody of components to match alloy specifications that are chosen for their specific properties such as heat resistance, corrosion resistance, durability, etc. Having the right alloy in the right place is essential in places like petroleum refineries and chemical plants, because the right alloy with the right properties is often all that stands between a safe, efficient operation and lost time and revenue.
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Washers are an essential part of any fastener assembly. As they serve to incorporate spacing and distribute load when placed between a nut and bolt or screw, they will help prevent wear and distortion of installation surfaces over time. Use them to make maintenance easier by allowing for smoother loosening and tightening of components. We manufacture flat washers in a wide range of materials and in an extensive range of shapes, sizes and thicknesses. They can be ordered from our inventory or produced and packaged according to your custom requirements.
Meeting All Of Your strut&strut fittings NeedsOur capabilities allow us to create strut&strut fittings to suit many different requirements.If you're looking for general purpose or custom size fasteners or Packing, we have the manufacturing &Sourcing capabilities, extensive supply of raw materials, and complete supplier certifications to meet the most rigorous demands.
All fasteners perform the same function—mechanically joining and securing two or more parts together. However, differences in type, quality, shape, and material significantly influence the fastener’s performance and service life. Understanding the functional varieties of the different types available, including nuts, bolts, and washers, is essential to selecting the appropriate fastener (and fastener supplier) for your project.
At H.J TECH, we pride ourselves on offering a full range of stock and custom fasteners that provide durability and high performance at competitive prices. The following guide outlines a small selection of the types of fasteners available in our total inventory to help you choose the optimal product for your fastening application.
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