• Thread Class : 2a
  • Thread Direction : Right-hand
  • Thread Length : 0.262 inches minimum and 0.312 inches maximum
  • Fastener Length : 0.281 inches minimum and 0.312 inches maximum
  • Head Style : Pan
  • Head Diameter : 0.205 inches minimum and 0.219 inches maximum
  • Head Height : 0.070 inches minimum and 0.080 inches maximum
  • Internal Drive Style : Cross recess type 1
  • Thread Diameter : 0.112 inches
  • Thready Qty Per Inch (tpi) : 40
  • Min. Tensile Strength (psi) : 55000 pounds per square inch
  • Screw Material : Steel comp 1010 or steel comp 1011 or steel comp 1013
  • Screw Material Specification : 66 fed std all material responses
  • Screw Surface Treatment : Cadmium and chromate
  • Screw Surface Treatment Specification : Qq-p-416,ty 2,cl 3 fed spec single treatment response
  • Thread Series Designator : Unc

 

Machine Screw

  • length: 5/16", thread: 4-40, pan head, cadmium plated carbon steel, coarse thread