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Fine Thread Grade 5 Steel Plain Hex Head Cap Screws

Fine Thread Grade 5 Steel Plain Hex Head Cap Screws
Product Detailed Description

1/4-28 x 2-1/4" Long Grade 5 Steel Plain Hex Head Cap Screws

  • Description: A cap screw made from medium carbon steel and heat-treated.
  • Applications/Advantages: Has greater tensile strength than a Grade-2. Yield-to-tensile ratio is the lowest of all heat treated steels.
  • Heat Treatment: Grade-5 cap screws shall be heat treated, oil or water quenched, at the option of the manufacturer, and tempered at a minimum tempering temperature of 800°F.
  • Material: Medium carbon steel. Use of an alloy steel is also acceptable.
  • Core Hardness: 1/4 through 1 in. diameter, all lengths: Rockwell C25 - C34. 1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell C19 - C30.
  • Surface Hardness: 1/4 through 1 in. diameter, all lengths: Rockwell 30N54 maximum. 1-1/8 through 1-1/2 in. diameter, all lengths: Rockwell 30N50 maximum.
  • Proof Load: 1/4 through 1 in. diameter, all lengths: 85,000 psi. 1-1/8 through 1-1/2 in. diameter, all lengths: 74,000 psi.
  • Yield Strength*: 1/4 through 1 in. diameter, all lengths: 92,000 psi. minimum 1-1/8 through 1-1/2 in. diameter, all lengths: 81,000 psi. minimum
  • Tensile Strength: 1/4 through 1 in. diameter, all lengths: 120,000 psi. minimum 1-1/8 through 1-1/2 in. diameter, all lengths: 105,000 psi. minimum
  • Elongation*: 14% minimum (all diameters)
  • Reduction of Area*: 35% minimum (all sizes)

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