Hex Cap Screws (Inch)

Size [1] [2] Diameter Flat Width Head Height Thread Length
1/4 0.250 0.438 0.163 0.750
5/16 0.313 0.500 0.211 0.875
3/8 0.375 0.563 0.243 1.000
7/16 0.438 0.625 0.291 1.125
1/2 0.500 0.750 0.323 1.250
9/16 0.563 0.813 0.371 1.375
5/8 0.625 0.938 0.403 1.500
3/4 0.750 1.125 0.483 1.750
7/8 0.875 1.313 0.563 2.000
1 1.000 1.500 0.627 2.250
1 1/8 1.125 1.688 0.718 2.500
1 1/4 1.250 1.875 0.813 2.750
1 3/8 1.375 2.063 0.878 3.000
1 1/2 1.500 2.250 0.974 3.250
1 3/4 1.750 2.625 1.134 3.750
2 2.000 3.000 1.263 4.250
2 1/4 2.250 3.375 1.423 5.000
2 1/2 2.500 3.750 1.583 5.500
2 3/4 2.750 4.125 1.744 6.000
3 3.000 4.500 1.935 6.500

Materials

  • SAE J429 Grade 3/5/8
  • ASTM A449
  • ASTM A354 Grade BD

  1. Dimensions per ASME B18.2.1-1996 in inches. ↩︎

  2. Oberg, Jones, Horton, Ryffel, McCauley. (2020). Machinery’s Handbook 31 Digital Edition. Industrial Press eBookstore ↩︎