Fastener Material Key
	      
	        |  | A2 Stainless Steel - Also known as grade 304 or 18/8. A general purpose grade of stainless steel. | 
      
	        |  | A4 Stainless Steel - Also known as grade 316 or 18/8/3. A higher corrosion resistant, marine grade of stainless steel. | 
      
	        |  | A5 Stainless Steel - A special stainless steel, also known as 316Ti and 1.4571. Similar to A4 but stabilised with titanium. Popularly employed in the chemical industry. | 
      
	        |  | Aluminium - Aluminium is a lightweight, strong and corrosion resistant material. As the temperature lowers, aluminium actually increases in strength. It is also non-magnetic, carries a current and does not spark easily. | 
      
	        |  | Brass - Offers an attractive, corrosion resistant finish. | 
      
	        |  | Phosphor Bronze - Attractive orange metal normally used in conjunction with brass fasteners. | 
      
	        |  | Bright Zinc Plated (BZP) Steel - Non-stainless standard steel grade offering a basic level of corrosion resistance. | 
      
	        |  | Bright Zinc Plated (BZP) Steel with 300HV hardness - Non-stainless standard steel grade offering a basic level of corrosion resistance, but with 300HV hardness. | 
      
	        |  | Copper Alloy - Copper has good corrosion resistance and high tensile strength, allowing it to withstand high-pressure and high temperature conditions. It is a highly ductile and malleable material, enabling copper washers to create tighter seals and withstand vibration better than steel. Copper also provides excellent thermal and electrical conductivity. | 
      
	        |  | Duplex Stainless Steel 1.4462 - A type of stainless steel which has greater corrosion resistance than A4 / 316 and a high tensile strength of minimum 700 N/mm2. Also known as 318LN. | 
      
	        |  | Hot Dip Galvanised Steel - The thick galvanised zinc coating provides a very good corrosion resistance for any non-stainless steel. | 
      
	        |  | Plastic (Nylon Polyamide) - A tough lightweight plastic, strong at low temperatures, with excellent resistance to chemicals, and features favourable sliding friction behaviour. | 
      
	        |  | Organic Zinc Flake Coated Steel - Steel parts coated with superior mechanically applied zinc with corrosion resistance lasting 480 hours in the salt spray test. | 
      
	        |  | Zinc Flake coated steel with 300HV hardness - Coated with superior mechanically applied zinc with corrosion resistance lasting 480 hours in the salt spray test, and with 300HV hardness. |