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Best Copper Alloy Smartwatches

Hardness Testing File Set

  • 【Accurately measured value】-----Precision measurement circuit to ensure Indication error ± 0.5% (HLD = 800), showing the value of repeatability 0.8%.
  • 【Leeb hardness measurement】-----Based Leeb hardness measuring principle, can detect a variety of metal materials.
  • 【Supports a variety of standard hardness】-----Real-time display and conversion: Brinell HB, Rockwell HRC, Vickers HV, Shaw HS, and three kinds of intensity values.
  • 【Applicable Materials】-----Steel and cast steel, alloy tool steel, stainless steel, gray cast iron, nodular cast iron, cast aluminum alloy, copper zinc alloys (brass), an alloy of copper and tin, copper(bronze).
  • 【Application】-----1)Bearings and other parts.
  • 2)Failure analysis of pressure vessel, steam turbine generator group and equipment.
  • 4)Mechanical or permanent assembly installed.
  • 6)The original record of formal requirements on test results.
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Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc #10-24 - Qty 25

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
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Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc #10-24 - QTY 100

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
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Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 1/4\-20 - Qty 25

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
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Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 3/8\-16 - Qty 1

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock

Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 5/16\-18 - Qty 25

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock

Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 5/16\-18 - Qty 100

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock

Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 1/2\-13 - Qty 1

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock

Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 1/2\-13 - Qty 25

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock

Tri-Groove Tamper Proof Security Nuts Zamak 5 Zinc 3/8 -16 - Qty 25

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock

Tri-Groove Tamper Proof T Groove Security Nuts Zamak 5 Zinc #10-24 Qty 25

  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • Installed using a special tri groove socket (sold separately).
  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
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A Dark Heart (Elders and Welders Chronicles Book 2)

  • ️【★TIG&ARC Strong Point】High Frequency Start TIG,Non-Contact Arc Initiation That Reduces Tungsten And Material Consumption.Rated Input Frequency 50/60Hz, Duty Cycle 85%，Improves The Performance Of The Welding Machine..
  • ️【★Feature】TIG/ARC 2-in-1,Tig& ARC Welder With Tig Torch, Earth Clamp, Electrode Holder,Welding Tong.
  • ️【★Portable And Powerful】TIG Welding Thickness 0.3-4.8mm,Stainless Steel, Alloy Steel, Mild Steel, Copper, Cast Iron And Chrome.ARC Welding Thickness 15-42mm.
  • ️【★Energy Saving】Portable Handle Makes It Easier To Operate, The Lightweight Makes It More Convenient To Carry.Suitable For Stainless Steel, Alloy Steel, Carbon Steel, Copper, Copper Alloy And Other Non-ferrous Metal Welding.
  • ️Automatic Compensation For Voltage Fluctuation, Over-voltage Protection, Under Voltage Protection, Over Current Protection, Over Load Protection.
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(500pcs) #10-24 Security Break Away Nuts Aluminum Ships FREE in USA by Aspen Fasteners, AFTPR-171070-D

  • Tri Groove Security Nuts are made of Zamak 5 Zinc Alloy (95% Zinc, 4% Aluminum, 1% Copper). Zamak is an alloy of Zinc and Aluminium, sometimes also incorporating Magnesium and Copper..
  • The added copper in Zamak 5 increases the strength, hardness, and corrosion resistance of the alloy, but reduces its ductility and dimensional accuracy compared to other Zamak Alloys..
  • Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts..
  • May only be installed and remove using tri groove or trident drivers or sockets - Sold Separately.
Check Stock