Home > Socket Products > Socket Cap Screws > Inch Socket Cap Screws > Socket Head Cap Screws - Inch >

4-40 X 1-1/4 Socket Cap Screw Alloy Steel Black Oxide DFAR [100 per Box]
4-40 X 1-1/4 Socket Head Cap Screws
4-40 X 1-1/4 Socket Head Cap Screws
 


Availability: Contact us for price & availability
Product Code: SC4CX1.25D

Description
 
4-40 X 1-1/4 SOCKET HEAD CAP SCREW ALLOY STEEL BLACK OXIDE DFAR / CLASS 3A THREAD / PER ASME B18.3-2012 / 0420CSP
Product Details


  • Socket Head Cap Screw
  • Size: 4-40
  • Length: 1-1/4
  • Class 3A Thread
  • Material: Alloy Steel: Carbon: 0.31% minimum; Phosphorus: 0.040% maximum; Sulfur: 0.045% maximum.
    Also, one or more of the following to meet strength requirement - chromium, nickel, molybdenum or vanadium
  • Plating/Finish: Black Oxide
  • Heat Treatment: Heat treated by oil quenching from above the transformation temperature
    then tempered at a temperature not lower than 650°F.
  • Per ASME B18.3-2012
  • DFAR Compliant
  • Max Body Diameter: 0.112
  • Min Body Diameter: 0.1075
  • Max Head Diameter: 0.183
  • Min Head Diameter: 0.176
  • Max Head Height: 0.112
  • Min Head Height: 0.108
  • Max Top Chamfer or Radius: 0.009
  • Nom. Hex Socket Size: 3/32
  • Max Fillet Juncture Diam. at Bearing Surface: 0.13
  • Min Fillet Diam. at Bearing Surface: 0.117
  • Min Key Engagement: 0.051
  • Min Wall Thickness: 0.038
  • Max Bottom Chamfer or Radius: 0.008
  • Length Tolerance: -0.04
  • Hardness: Rockwell C39 minimum
  • Tensile Strength: 180,000 psi. minimum
  • Yield Strength: 162,000 psi. minimum
  • Free Manufacturer's Certifications Available
  • P/N: 0420CSP
  • Weight per Box:0.45 lb
  • Weight per Piece:0.0045 lb