#004200

Diameter Thread Threads Length Grade Finish Weight
0.3125 (5/16) Partial 24 3.5 (3 1/2) Grade 8 Zinc Yellow .0833
Diameter 0.3125 (5/16)
Thread 24
Length 3.5 (3 1/2)
Grade Grade 8
Finish Zinc Yellow
Weight .0833



Hex Head Cap Screws, or Partial Thread Cap Screws, are a staple in the fastener industry. They are commonly called “hex bolts” but a hex cap screw is made to a higher quality than Hex Head Bolts allowing the head to hold flush to the clamped material. Earnest offers Cap Screws in grades 5 and 8

Hex Head Cap ScrewGrade 5

  • Sizes range from 1/4" to 2
  • Meets ASME B18.2.1 standards
  • Hex Head Cap Screw – Grade 8

  • Sizes range from 1/4" to 2
  • Meets ASME B18.2.1 standards
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